diff --git a/src/Api/AboutApi.php b/src/Api/AboutApi.php
index d546504..bbb748c 100644
--- a/src/Api/AboutApi.php
+++ b/src/Api/AboutApi.php
@@ -64,14 +64,14 @@ class AboutApi
     protected $headerSelector;
 
     /**
-     * @param ClientInterface $client
-     * @param Configuration   $config
-     * @param HeaderSelector  $selector
+     * @param ClientInterface|null $client
+     * @param Configuration|null   $config
+     * @param HeaderSelector|null  $selector
      */
     public function __construct(
-        ClientInterface $client = null,
-        Configuration $config = null,
-        HeaderSelector $selector = null
+        ?ClientInterface $client = null,
+        ?Configuration $config = null,
+        ?HeaderSelector $selector = null
     ) {
         $this->client = $client ?: new Client();
         $this->config = $config ?: Configuration::getDefaultConfiguration();
diff --git a/src/Api/ApplicationManagementApi.php b/src/Api/ApplicationManagementApi.php
index 4926622..08b7fa7 100644
--- a/src/Api/ApplicationManagementApi.php
+++ b/src/Api/ApplicationManagementApi.php
@@ -64,14 +64,14 @@ class ApplicationManagementApi
     protected $headerSelector;
 
     /**
-     * @param ClientInterface $client
-     * @param Configuration   $config
-     * @param HeaderSelector  $selector
+     * @param ClientInterface|null $client
+     * @param Configuration|null   $config
+     * @param HeaderSelector|null  $selector
      */
     public function __construct(
-        ClientInterface $client = null,
-        Configuration $config = null,
-        HeaderSelector $selector = null
+        ?ClientInterface $client = null,
+        ?Configuration $config = null,
+        ?HeaderSelector $selector = null
     ) {
         $this->client = $client ?: new Client();
         $this->config = $config ?: Configuration::getDefaultConfiguration();
diff --git a/src/Api/AuthenticationApi.php b/src/Api/AuthenticationApi.php
index d22b018..e888d56 100644
--- a/src/Api/AuthenticationApi.php
+++ b/src/Api/AuthenticationApi.php
@@ -64,14 +64,14 @@ class AuthenticationApi
     protected $headerSelector;
 
     /**
-     * @param ClientInterface $client
-     * @param Configuration   $config
-     * @param HeaderSelector  $selector
+     * @param ClientInterface|null $client
+     * @param Configuration|null   $config
+     * @param HeaderSelector|null  $selector
      */
     public function __construct(
-        ClientInterface $client = null,
-        Configuration $config = null,
-        HeaderSelector $selector = null
+        ?ClientInterface $client = null,
+        ?Configuration $config = null,
+        ?HeaderSelector $selector = null
     ) {
         $this->client = $client ?: new Client();
         $this->config = $config ?: Configuration::getDefaultConfiguration();
diff --git a/src/Api/ContentConnectorsApi.php b/src/Api/ContentConnectorsApi.php
index 2f6a7a0..aa9f36d 100644
--- a/src/Api/ContentConnectorsApi.php
+++ b/src/Api/ContentConnectorsApi.php
@@ -64,14 +64,14 @@ class ContentConnectorsApi
     protected $headerSelector;
 
     /**
-     * @param ClientInterface $client
-     * @param Configuration   $config
-     * @param HeaderSelector  $selector
+     * @param ClientInterface|null $client
+     * @param Configuration|null   $config
+     * @param HeaderSelector|null  $selector
      */
     public function __construct(
-        ClientInterface $client = null,
-        Configuration $config = null,
-        HeaderSelector $selector = null
+        ?ClientInterface $client = null,
+        ?Configuration $config = null,
+        ?HeaderSelector $selector = null
     ) {
         $this->client = $client ?: new Client();
         $this->config = $config ?: Configuration::getDefaultConfiguration();
diff --git a/src/Api/CourseApi.php b/src/Api/CourseApi.php
index e829f84..2fce562 100644
--- a/src/Api/CourseApi.php
+++ b/src/Api/CourseApi.php
@@ -64,14 +64,14 @@ class CourseApi
     protected $headerSelector;
 
     /**
-     * @param ClientInterface $client
-     * @param Configuration   $config
-     * @param HeaderSelector  $selector
+     * @param ClientInterface|null $client
+     * @param Configuration|null   $config
+     * @param HeaderSelector|null  $selector
      */
     public function __construct(
-        ClientInterface $client = null,
-        Configuration $config = null,
-        HeaderSelector $selector = null
+        ?ClientInterface $client = null,
+        ?Configuration $config = null,
+        ?HeaderSelector $selector = null
     ) {
         $this->client = $client ?: new Client();
         $this->config = $config ?: Configuration::getDefaultConfiguration();
diff --git a/src/Api/DispatchApi.php b/src/Api/DispatchApi.php
index 12fad6e..274f7c2 100644
--- a/src/Api/DispatchApi.php
+++ b/src/Api/DispatchApi.php
@@ -64,14 +64,14 @@ class DispatchApi
     protected $headerSelector;
 
     /**
-     * @param ClientInterface $client
-     * @param Configuration   $config
-     * @param HeaderSelector  $selector
+     * @param ClientInterface|null $client
+     * @param Configuration|null   $config
+     * @param HeaderSelector|null  $selector
      */
     public function __construct(
-        ClientInterface $client = null,
-        Configuration $config = null,
-        HeaderSelector $selector = null
+        ?ClientInterface $client = null,
+        ?Configuration $config = null,
+        ?HeaderSelector $selector = null
     ) {
         $this->client = $client ?: new Client();
         $this->config = $config ?: Configuration::getDefaultConfiguration();
diff --git a/src/Api/InvitationsApi.php b/src/Api/InvitationsApi.php
index c12a038..75a8edf 100644
--- a/src/Api/InvitationsApi.php
+++ b/src/Api/InvitationsApi.php
@@ -64,14 +64,14 @@ class InvitationsApi
     protected $headerSelector;
 
     /**
-     * @param ClientInterface $client
-     * @param Configuration   $config
-     * @param HeaderSelector  $selector
+     * @param ClientInterface|null $client
+     * @param Configuration|null   $config
+     * @param HeaderSelector|null  $selector
      */
     public function __construct(
-        ClientInterface $client = null,
-        Configuration $config = null,
-        HeaderSelector $selector = null
+        ?ClientInterface $client = null,
+        ?Configuration $config = null,
+        ?HeaderSelector $selector = null
     ) {
         $this->client = $client ?: new Client();
         $this->config = $config ?: Configuration::getDefaultConfiguration();
diff --git a/src/Api/LearnerApi.php b/src/Api/LearnerApi.php
index ab01d52..e903a97 100644
--- a/src/Api/LearnerApi.php
+++ b/src/Api/LearnerApi.php
@@ -64,14 +64,14 @@ class LearnerApi
     protected $headerSelector;
 
     /**
-     * @param ClientInterface $client
-     * @param Configuration   $config
-     * @param HeaderSelector  $selector
+     * @param ClientInterface|null $client
+     * @param Configuration|null   $config
+     * @param HeaderSelector|null  $selector
      */
     public function __construct(
-        ClientInterface $client = null,
-        Configuration $config = null,
-        HeaderSelector $selector = null
+        ?ClientInterface $client = null,
+        ?Configuration $config = null,
+        ?HeaderSelector $selector = null
     ) {
         $this->client = $client ?: new Client();
         $this->config = $config ?: Configuration::getDefaultConfiguration();
diff --git a/src/Api/PingApi.php b/src/Api/PingApi.php
index dccc810..eb3ee66 100644
--- a/src/Api/PingApi.php
+++ b/src/Api/PingApi.php
@@ -64,14 +64,14 @@ class PingApi
     protected $headerSelector;
 
     /**
-     * @param ClientInterface $client
-     * @param Configuration   $config
-     * @param HeaderSelector  $selector
+     * @param ClientInterface|null $client
+     * @param Configuration|null   $config
+     * @param HeaderSelector|null  $selector
      */
     public function __construct(
-        ClientInterface $client = null,
-        Configuration $config = null,
-        HeaderSelector $selector = null
+        ?ClientInterface $client = null,
+        ?Configuration $config = null,
+        ?HeaderSelector $selector = null
     ) {
         $this->client = $client ?: new Client();
         $this->config = $config ?: Configuration::getDefaultConfiguration();
diff --git a/src/Api/RegistrationApi.php b/src/Api/RegistrationApi.php
index 5bd6755..86de060 100644
--- a/src/Api/RegistrationApi.php
+++ b/src/Api/RegistrationApi.php
@@ -64,14 +64,14 @@ class RegistrationApi
     protected $headerSelector;
 
     /**
-     * @param ClientInterface $client
-     * @param Configuration   $config
-     * @param HeaderSelector  $selector
+     * @param ClientInterface|null $client
+     * @param Configuration|null   $config
+     * @param HeaderSelector|null  $selector
      */
     public function __construct(
-        ClientInterface $client = null,
-        Configuration $config = null,
-        HeaderSelector $selector = null
+        ?ClientInterface $client = null,
+        ?Configuration $config = null,
+        ?HeaderSelector $selector = null
     ) {
         $this->client = $client ?: new Client();
         $this->config = $config ?: Configuration::getDefaultConfiguration();
diff --git a/src/Api/ReportingApi.php b/src/Api/ReportingApi.php
index 397aac0..a5a2ff6 100644
--- a/src/Api/ReportingApi.php
+++ b/src/Api/ReportingApi.php
@@ -64,14 +64,14 @@ class ReportingApi
     protected $headerSelector;
 
     /**
-     * @param ClientInterface $client
-     * @param Configuration   $config
-     * @param HeaderSelector  $selector
+     * @param ClientInterface|null $client
+     * @param Configuration|null   $config
+     * @param HeaderSelector|null  $selector
      */
     public function __construct(
-        ClientInterface $client = null,
-        Configuration $config = null,
-        HeaderSelector $selector = null
+        ?ClientInterface $client = null,
+        ?Configuration $config = null,
+        ?HeaderSelector $selector = null
     ) {
         $this->client = $client ?: new Client();
         $this->config = $config ?: Configuration::getDefaultConfiguration();
diff --git a/src/Api/XapiApi.php b/src/Api/XapiApi.php
index ce20363..feff6bf 100644
--- a/src/Api/XapiApi.php
+++ b/src/Api/XapiApi.php
@@ -64,14 +64,14 @@ class XapiApi
     protected $headerSelector;
 
     /**
-     * @param ClientInterface $client
-     * @param Configuration   $config
-     * @param HeaderSelector  $selector
+     * @param ClientInterface|null $client
+     * @param Configuration|null   $config
+     * @param HeaderSelector|null  $selector
      */
     public function __construct(
-        ClientInterface $client = null,
-        Configuration $config = null,
-        HeaderSelector $selector = null
+        ?ClientInterface $client = null,
+        ?Configuration $config = null,
+        ?HeaderSelector $selector = null
     ) {
         $this->client = $client ?: new Client();
         $this->config = $config ?: Configuration::getDefaultConfiguration();
diff --git a/src/Api/ZoomiApi.php b/src/Api/ZoomiApi.php
index b04807c..cd127f2 100644
--- a/src/Api/ZoomiApi.php
+++ b/src/Api/ZoomiApi.php
@@ -64,14 +64,14 @@ class ZoomiApi
     protected $headerSelector;
 
     /**
-     * @param ClientInterface $client
-     * @param Configuration   $config
-     * @param HeaderSelector  $selector
+     * @param ClientInterface|null $client
+     * @param Configuration|null   $config
+     * @param HeaderSelector|null  $selector
      */
     public function __construct(
-        ClientInterface $client = null,
-        Configuration $config = null,
-        HeaderSelector $selector = null
+        ?ClientInterface $client = null,
+        ?Configuration $config = null,
+        ?HeaderSelector $selector = null
     ) {
         $this->client = $client ?: new Client();
         $this->config = $config ?: Configuration::getDefaultConfiguration();
diff --git a/src/Model/AboutSchema.php b/src/Model/AboutSchema.php
index aab6208..719e322 100644
--- a/src/Model/AboutSchema.php
+++ b/src/Model/AboutSchema.php
@@ -176,10 +176,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['version'] = isset($data['version']) ? $data['version'] : null;
         $this->container['distribution'] = isset($data['distribution']) ? $data['distribution'] : null;
diff --git a/src/Model/ActivityResultSchema.php b/src/Model/ActivityResultSchema.php
index c11f246..ac22e33 100644
--- a/src/Model/ActivityResultSchema.php
+++ b/src/Model/ActivityResultSchema.php
@@ -265,10 +265,10 @@ public function getActivitySuccessAllowableValues()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['id'] = isset($data['id']) ? $data['id'] : null;
         $this->container['title'] = isset($data['title']) ? $data['title'] : null;
diff --git a/src/Model/ApplicationInfoListSchema.php b/src/Model/ApplicationInfoListSchema.php
index 0191e29..a3b1956 100644
--- a/src/Model/ApplicationInfoListSchema.php
+++ b/src/Model/ApplicationInfoListSchema.php
@@ -176,10 +176,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['applications'] = isset($data['applications']) ? $data['applications'] : null;
         $this->container['more'] = isset($data['more']) ? $data['more'] : null;
diff --git a/src/Model/ApplicationInfoSchema.php b/src/Model/ApplicationInfoSchema.php
index 0be1592..475e900 100644
--- a/src/Model/ApplicationInfoSchema.php
+++ b/src/Model/ApplicationInfoSchema.php
@@ -201,10 +201,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['id'] = isset($data['id']) ? $data['id'] : null;
         $this->container['name'] = isset($data['name']) ? $data['name'] : null;
diff --git a/src/Model/ApplicationListSchema.php b/src/Model/ApplicationListSchema.php
index c6c1e72..053c2b0 100644
--- a/src/Model/ApplicationListSchema.php
+++ b/src/Model/ApplicationListSchema.php
@@ -171,10 +171,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['applications'] = isset($data['applications']) ? $data['applications'] : null;
     }
diff --git a/src/Model/ApplicationRequestSchema.php b/src/Model/ApplicationRequestSchema.php
index cf3272a..7c94bbd 100644
--- a/src/Model/ApplicationRequestSchema.php
+++ b/src/Model/ApplicationRequestSchema.php
@@ -171,10 +171,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['name'] = isset($data['name']) ? $data['name'] : null;
     }
diff --git a/src/Model/ApplicationSchema.php b/src/Model/ApplicationSchema.php
index 2466e56..c5c9093 100644
--- a/src/Model/ApplicationSchema.php
+++ b/src/Model/ApplicationSchema.php
@@ -176,10 +176,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['id'] = isset($data['id']) ? $data['id'] : null;
         $this->container['name'] = isset($data['name']) ? $data['name'] : null;
diff --git a/src/Model/ApplicationToken.php b/src/Model/ApplicationToken.php
index 6e32928..ef90331 100644
--- a/src/Model/ApplicationToken.php
+++ b/src/Model/ApplicationToken.php
@@ -181,10 +181,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['access_token'] = isset($data['access_token']) ? $data['access_token'] : null;
         $this->container['expires_in'] = isset($data['expires_in']) ? $data['expires_in'] : null;
diff --git a/src/Model/AssetFileSchema.php b/src/Model/AssetFileSchema.php
index ddb7b12..472a5f0 100644
--- a/src/Model/AssetFileSchema.php
+++ b/src/Model/AssetFileSchema.php
@@ -176,10 +176,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['filename'] = isset($data['filename']) ? $data['filename'] : null;
         $this->container['destination'] = isset($data['destination']) ? $data['destination'] : null;
diff --git a/src/Model/BatchTagsSchema.php b/src/Model/BatchTagsSchema.php
index 2b208f4..9c4fe0b 100644
--- a/src/Model/BatchTagsSchema.php
+++ b/src/Model/BatchTagsSchema.php
@@ -176,10 +176,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['ids'] = isset($data['ids']) ? $data['ids'] : null;
         $this->container['tags'] = isset($data['tags']) ? $data['tags'] : null;
diff --git a/src/Model/CommentSchema.php b/src/Model/CommentSchema.php
index 29e5a90..06b64bc 100644
--- a/src/Model/CommentSchema.php
+++ b/src/Model/CommentSchema.php
@@ -181,10 +181,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['value'] = isset($data['value']) ? $data['value'] : null;
         $this->container['location'] = isset($data['location']) ? $data['location'] : null;
diff --git a/src/Model/CompletionAmountSchema.php b/src/Model/CompletionAmountSchema.php
index e851a1b..dd35927 100644
--- a/src/Model/CompletionAmountSchema.php
+++ b/src/Model/CompletionAmountSchema.php
@@ -171,10 +171,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['scaled'] = isset($data['scaled']) ? $data['scaled'] : null;
     }
diff --git a/src/Model/ConnectorListSchema.php b/src/Model/ConnectorListSchema.php
index b0b5ace..8d2eec9 100644
--- a/src/Model/ConnectorListSchema.php
+++ b/src/Model/ConnectorListSchema.php
@@ -172,10 +172,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['connector_entries'] = isset($data['connector_entries']) ? $data['connector_entries'] : null;
     }
diff --git a/src/Model/ConnectorSchema.php b/src/Model/ConnectorSchema.php
index 7696e92..f5a5e0c 100644
--- a/src/Model/ConnectorSchema.php
+++ b/src/Model/ConnectorSchema.php
@@ -192,10 +192,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['connector_id'] = isset($data['connector_id']) ? $data['connector_id'] : null;
         $this->container['content_connector_type'] = isset($data['content_connector_type']) ? $data['content_connector_type'] : null;
diff --git a/src/Model/CourseActivitySchema.php b/src/Model/CourseActivitySchema.php
index 2cde760..fadea29 100644
--- a/src/Model/CourseActivitySchema.php
+++ b/src/Model/CourseActivitySchema.php
@@ -227,10 +227,10 @@ public function getActivityTypeAllowableValues()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['external_identifier'] = isset($data['external_identifier']) ? $data['external_identifier'] : null;
         $this->container['item_identifier'] = isset($data['item_identifier']) ? $data['item_identifier'] : null;
diff --git a/src/Model/CourseListNonPagedSchema.php b/src/Model/CourseListNonPagedSchema.php
index 6918591..8c113b5 100644
--- a/src/Model/CourseListNonPagedSchema.php
+++ b/src/Model/CourseListNonPagedSchema.php
@@ -171,10 +171,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['courses'] = isset($data['courses']) ? $data['courses'] : null;
     }
diff --git a/src/Model/CourseListSchema.php b/src/Model/CourseListSchema.php
index 3f5f21a..c442637 100644
--- a/src/Model/CourseListSchema.php
+++ b/src/Model/CourseListSchema.php
@@ -176,10 +176,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['courses'] = isset($data['courses']) ? $data['courses'] : null;
         $this->container['more'] = isset($data['more']) ? $data['more'] : null;
diff --git a/src/Model/CourseReferenceSchema.php b/src/Model/CourseReferenceSchema.php
index 2a28a86..8efd6cc 100644
--- a/src/Model/CourseReferenceSchema.php
+++ b/src/Model/CourseReferenceSchema.php
@@ -182,10 +182,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['id'] = isset($data['id']) ? $data['id'] : null;
         $this->container['title'] = isset($data['title']) ? $data['title'] : null;
diff --git a/src/Model/CourseSchema.php b/src/Model/CourseSchema.php
index 6af3cd6..09d9eb8 100644
--- a/src/Model/CourseSchema.php
+++ b/src/Model/CourseSchema.php
@@ -262,10 +262,10 @@ public function getCourseLearningStandardAllowableValues()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['id'] = isset($data['id']) ? $data['id'] : null;
         $this->container['title'] = isset($data['title']) ? $data['title'] : null;
diff --git a/src/Model/CreateConnectorSchema.php b/src/Model/CreateConnectorSchema.php
index e94c696..7b77f15 100644
--- a/src/Model/CreateConnectorSchema.php
+++ b/src/Model/CreateConnectorSchema.php
@@ -181,10 +181,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['content_connector_type'] = isset($data['content_connector_type']) ? $data['content_connector_type'] : null;
         $this->container['configuration'] = isset($data['configuration']) ? $data['configuration'] : null;
diff --git a/src/Model/CreateDispatchIdSchema.php b/src/Model/CreateDispatchIdSchema.php
index 8231133..3526aec 100644
--- a/src/Model/CreateDispatchIdSchema.php
+++ b/src/Model/CreateDispatchIdSchema.php
@@ -176,10 +176,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['id'] = isset($data['id']) ? $data['id'] : null;
         $this->container['data'] = isset($data['data']) ? $data['data'] : null;
diff --git a/src/Model/CreateDispatchListSchema.php b/src/Model/CreateDispatchListSchema.php
index 87a2a03..8d01980 100644
--- a/src/Model/CreateDispatchListSchema.php
+++ b/src/Model/CreateDispatchListSchema.php
@@ -171,10 +171,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['dispatches'] = isset($data['dispatches']) ? $data['dispatches'] : null;
     }
diff --git a/src/Model/CreateDispatchSchema.php b/src/Model/CreateDispatchSchema.php
index 91a6b90..d157339 100644
--- a/src/Model/CreateDispatchSchema.php
+++ b/src/Model/CreateDispatchSchema.php
@@ -221,10 +221,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['destination_id'] = isset($data['destination_id']) ? $data['destination_id'] : null;
         $this->container['course_id'] = isset($data['course_id']) ? $data['course_id'] : null;
diff --git a/src/Model/CreatePrivateInvitationSchema.php b/src/Model/CreatePrivateInvitationSchema.php
index 4c25f7b..db2999b 100644
--- a/src/Model/CreatePrivateInvitationSchema.php
+++ b/src/Model/CreatePrivateInvitationSchema.php
@@ -220,10 +220,10 @@ public function getDuplicateRegistrationOptionAllowableValues()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['course_id'] = isset($data['course_id']) ? $data['course_id'] : null;
         $this->container['creating_user_email'] = isset($data['creating_user_email']) ? $data['creating_user_email'] : null;
diff --git a/src/Model/CreatePublicInvitationSchema.php b/src/Model/CreatePublicInvitationSchema.php
index cd765d2..94a2723 100644
--- a/src/Model/CreatePublicInvitationSchema.php
+++ b/src/Model/CreatePublicInvitationSchema.php
@@ -196,10 +196,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['course_id'] = isset($data['course_id']) ? $data['course_id'] : null;
         $this->container['creating_user_email'] = isset($data['creating_user_email']) ? $data['creating_user_email'] : null;
diff --git a/src/Model/CreateRegistrationSchema.php b/src/Model/CreateRegistrationSchema.php
index af4fc78..df6c163 100644
--- a/src/Model/CreateRegistrationSchema.php
+++ b/src/Model/CreateRegistrationSchema.php
@@ -216,10 +216,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['course_id'] = isset($data['course_id']) ? $data['course_id'] : null;
         $this->container['learner'] = isset($data['learner']) ? $data['learner'] : null;
diff --git a/src/Model/CredentialListSchema.php b/src/Model/CredentialListSchema.php
index b9c9bda..d305906 100644
--- a/src/Model/CredentialListSchema.php
+++ b/src/Model/CredentialListSchema.php
@@ -171,10 +171,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['credentials'] = isset($data['credentials']) ? $data['credentials'] : null;
     }
diff --git a/src/Model/CredentialRequestSchema.php b/src/Model/CredentialRequestSchema.php
index c3a7286..a6dc22c 100644
--- a/src/Model/CredentialRequestSchema.php
+++ b/src/Model/CredentialRequestSchema.php
@@ -176,10 +176,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['name'] = isset($data['name']) ? $data['name'] : null;
         $this->container['active'] = isset($data['active']) ? $data['active'] : null;
diff --git a/src/Model/CredentialSchema.php b/src/Model/CredentialSchema.php
index b372d3a..f0e11ae 100644
--- a/src/Model/CredentialSchema.php
+++ b/src/Model/CredentialSchema.php
@@ -201,10 +201,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['id'] = isset($data['id']) ? $data['id'] : null;
         $this->container['name'] = isset($data['name']) ? $data['name'] : null;
diff --git a/src/Model/DestinationIdSchema.php b/src/Model/DestinationIdSchema.php
index 3eb620c..7120b66 100644
--- a/src/Model/DestinationIdSchema.php
+++ b/src/Model/DestinationIdSchema.php
@@ -176,10 +176,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['id'] = isset($data['id']) ? $data['id'] : null;
         $this->container['data'] = isset($data['data']) ? $data['data'] : null;
diff --git a/src/Model/DestinationInfoIdSchema.php b/src/Model/DestinationInfoIdSchema.php
index 1a3bac1..e9d7a8c 100644
--- a/src/Model/DestinationInfoIdSchema.php
+++ b/src/Model/DestinationInfoIdSchema.php
@@ -176,10 +176,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['id'] = isset($data['id']) ? $data['id'] : null;
         $this->container['data'] = isset($data['data']) ? $data['data'] : null;
diff --git a/src/Model/DestinationInfoListSchema.php b/src/Model/DestinationInfoListSchema.php
index 0dfdaa1..5a635af 100644
--- a/src/Model/DestinationInfoListSchema.php
+++ b/src/Model/DestinationInfoListSchema.php
@@ -176,10 +176,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['destinations'] = isset($data['destinations']) ? $data['destinations'] : null;
         $this->container['more'] = isset($data['more']) ? $data['more'] : null;
diff --git a/src/Model/DestinationInfoSchema.php b/src/Model/DestinationInfoSchema.php
index 620f510..2c4a811 100644
--- a/src/Model/DestinationInfoSchema.php
+++ b/src/Model/DestinationInfoSchema.php
@@ -211,10 +211,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['name'] = isset($data['name']) ? $data['name'] : null;
         $this->container['dispatch_count'] = isset($data['dispatch_count']) ? $data['dispatch_count'] : null;
diff --git a/src/Model/DestinationListSchema.php b/src/Model/DestinationListSchema.php
index 68da6ec..576b726 100644
--- a/src/Model/DestinationListSchema.php
+++ b/src/Model/DestinationListSchema.php
@@ -171,10 +171,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['destinations'] = isset($data['destinations']) ? $data['destinations'] : null;
     }
diff --git a/src/Model/DestinationSchema.php b/src/Model/DestinationSchema.php
index 758c5b8..d141928 100644
--- a/src/Model/DestinationSchema.php
+++ b/src/Model/DestinationSchema.php
@@ -206,10 +206,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['name'] = isset($data['name']) ? $data['name'] : null;
         $this->container['updated'] = isset($data['updated']) ? $data['updated'] : null;
diff --git a/src/Model/DispatchIdSchema.php b/src/Model/DispatchIdSchema.php
index 852afa4..091b416 100644
--- a/src/Model/DispatchIdSchema.php
+++ b/src/Model/DispatchIdSchema.php
@@ -176,10 +176,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['id'] = isset($data['id']) ? $data['id'] : null;
         $this->container['data'] = isset($data['data']) ? $data['data'] : null;
diff --git a/src/Model/DispatchListSchema.php b/src/Model/DispatchListSchema.php
index e508467..5f8d960 100644
--- a/src/Model/DispatchListSchema.php
+++ b/src/Model/DispatchListSchema.php
@@ -176,10 +176,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['dispatches'] = isset($data['dispatches']) ? $data['dispatches'] : null;
         $this->container['more'] = isset($data['more']) ? $data['more'] : null;
diff --git a/src/Model/DispatchLti13InfoSchema.php b/src/Model/DispatchLti13InfoSchema.php
index ea748e5..c2298c0 100644
--- a/src/Model/DispatchLti13InfoSchema.php
+++ b/src/Model/DispatchLti13InfoSchema.php
@@ -171,10 +171,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['target_link_uri'] = isset($data['target_link_uri']) ? $data['target_link_uri'] : null;
     }
diff --git a/src/Model/DispatchLtiInfoSchema.php b/src/Model/DispatchLtiInfoSchema.php
index ea9c141..84e6280 100644
--- a/src/Model/DispatchLtiInfoSchema.php
+++ b/src/Model/DispatchLtiInfoSchema.php
@@ -181,10 +181,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['url'] = isset($data['url']) ? $data['url'] : null;
         $this->container['consumer_key'] = isset($data['consumer_key']) ? $data['consumer_key'] : null;
diff --git a/src/Model/DispatchRegistrationCountSchema.php b/src/Model/DispatchRegistrationCountSchema.php
index 788ddd8..81a9fd1 100644
--- a/src/Model/DispatchRegistrationCountSchema.php
+++ b/src/Model/DispatchRegistrationCountSchema.php
@@ -176,10 +176,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['registration_count'] = isset($data['registration_count']) ? $data['registration_count'] : null;
         $this->container['last_reset_date'] = isset($data['last_reset_date']) ? $data['last_reset_date'] : null;
diff --git a/src/Model/DispatchSchema.php b/src/Model/DispatchSchema.php
index 24bd7c0..c415b99 100644
--- a/src/Model/DispatchSchema.php
+++ b/src/Model/DispatchSchema.php
@@ -241,10 +241,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['destination_id'] = isset($data['destination_id']) ? $data['destination_id'] : null;
         $this->container['destination_name'] = isset($data['destination_name']) ? $data['destination_name'] : null;
diff --git a/src/Model/EnabledSchema.php b/src/Model/EnabledSchema.php
index 2c603ea..b098579 100644
--- a/src/Model/EnabledSchema.php
+++ b/src/Model/EnabledSchema.php
@@ -171,10 +171,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['enabled'] = isset($data['enabled']) ? $data['enabled'] : null;
     }
diff --git a/src/Model/FileListItemSchema.php b/src/Model/FileListItemSchema.php
index 502a90b..f9beb55 100644
--- a/src/Model/FileListItemSchema.php
+++ b/src/Model/FileListItemSchema.php
@@ -181,10 +181,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['path'] = isset($data['path']) ? $data['path'] : null;
         $this->container['size'] = isset($data['size']) ? $data['size'] : null;
diff --git a/src/Model/FileListSchema.php b/src/Model/FileListSchema.php
index 678325d..fe9149f 100644
--- a/src/Model/FileListSchema.php
+++ b/src/Model/FileListSchema.php
@@ -171,10 +171,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['files'] = isset($data['files']) ? $data['files'] : null;
     }
diff --git a/src/Model/ImportAssetRequestSchema.php b/src/Model/ImportAssetRequestSchema.php
index 977a7db..5a03397 100644
--- a/src/Model/ImportAssetRequestSchema.php
+++ b/src/Model/ImportAssetRequestSchema.php
@@ -177,10 +177,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['fetch_url'] = isset($data['fetch_url']) ? $data['fetch_url'] : null;
         $this->container['destination'] = isset($data['destination']) ? $data['destination'] : null;
diff --git a/src/Model/ImportConnectorRequestSchema.php b/src/Model/ImportConnectorRequestSchema.php
index 666e88f..7fdbd01 100644
--- a/src/Model/ImportConnectorRequestSchema.php
+++ b/src/Model/ImportConnectorRequestSchema.php
@@ -182,10 +182,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['connector_id'] = isset($data['connector_id']) ? $data['connector_id'] : null;
         $this->container['connector_id_for_content'] = isset($data['connector_id_for_content']) ? $data['connector_id_for_content'] : null;
diff --git a/src/Model/ImportFetchRequestSchema.php b/src/Model/ImportFetchRequestSchema.php
index 18ce0e0..3949c1f 100644
--- a/src/Model/ImportFetchRequestSchema.php
+++ b/src/Model/ImportFetchRequestSchema.php
@@ -182,10 +182,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['url'] = isset($data['url']) ? $data['url'] : null;
         $this->container['content_type'] = isset($data['content_type']) ? $data['content_type'] : 'application/zip';
diff --git a/src/Model/ImportJobResultSchema.php b/src/Model/ImportJobResultSchema.php
index 06d9b76..2261ed8 100644
--- a/src/Model/ImportJobResultSchema.php
+++ b/src/Model/ImportJobResultSchema.php
@@ -203,10 +203,10 @@ public function getStatusAllowableValues()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['job_id'] = isset($data['job_id']) ? $data['job_id'] : null;
         $this->container['status'] = isset($data['status']) ? $data['status'] : null;
diff --git a/src/Model/ImportMediaFileReferenceRequestSchema.php b/src/Model/ImportMediaFileReferenceRequestSchema.php
index 5ca228b..793f050 100644
--- a/src/Model/ImportMediaFileReferenceRequestSchema.php
+++ b/src/Model/ImportMediaFileReferenceRequestSchema.php
@@ -182,10 +182,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['url'] = isset($data['url']) ? $data['url'] : null;
         $this->container['content_type'] = isset($data['content_type']) ? $data['content_type'] : null;
diff --git a/src/Model/ImportRequestSchema.php b/src/Model/ImportRequestSchema.php
index a7b3359..a1876a4 100644
--- a/src/Model/ImportRequestSchema.php
+++ b/src/Model/ImportRequestSchema.php
@@ -182,10 +182,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['fetch_request'] = isset($data['fetch_request']) ? $data['fetch_request'] : null;
         $this->container['media_file_reference_request'] = isset($data['media_file_reference_request']) ? $data['media_file_reference_request'] : null;
diff --git a/src/Model/ImportResultSchema.php b/src/Model/ImportResultSchema.php
index 1878105..33015ad 100644
--- a/src/Model/ImportResultSchema.php
+++ b/src/Model/ImportResultSchema.php
@@ -186,10 +186,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['web_path_to_course'] = isset($data['web_path_to_course']) ? $data['web_path_to_course'] : null;
         $this->container['parser_warnings'] = isset($data['parser_warnings']) ? $data['parser_warnings'] : null;
diff --git a/src/Model/IntegerResultSchema.php b/src/Model/IntegerResultSchema.php
index 71c5fa9..082c9ab 100644
--- a/src/Model/IntegerResultSchema.php
+++ b/src/Model/IntegerResultSchema.php
@@ -171,10 +171,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['result'] = isset($data['result']) ? $data['result'] : null;
     }
diff --git a/src/Model/InvitationEmailSchema.php b/src/Model/InvitationEmailSchema.php
index 06fcf5e..30b5ade 100644
--- a/src/Model/InvitationEmailSchema.php
+++ b/src/Model/InvitationEmailSchema.php
@@ -182,10 +182,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['subject'] = isset($data['subject']) ? $data['subject'] : null;
         $this->container['body'] = isset($data['body']) ? $data['body'] : null;
diff --git a/src/Model/InvitationJobStatusSchema.php b/src/Model/InvitationJobStatusSchema.php
index 7e4f5e8..68d6864 100644
--- a/src/Model/InvitationJobStatusSchema.php
+++ b/src/Model/InvitationJobStatusSchema.php
@@ -205,10 +205,10 @@ public function getStatusAllowableValues()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['status'] = isset($data['status']) ? $data['status'] : null;
         $this->container['errors'] = isset($data['errors']) ? $data['errors'] : null;
diff --git a/src/Model/InvitationSummaryList.php b/src/Model/InvitationSummaryList.php
index ac1dbeb..7b65f73 100644
--- a/src/Model/InvitationSummaryList.php
+++ b/src/Model/InvitationSummaryList.php
@@ -163,10 +163,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         parent::__construct($data);
 
diff --git a/src/Model/InvitationSummarySchema.php b/src/Model/InvitationSummarySchema.php
index bc49e7d..9874a34 100644
--- a/src/Model/InvitationSummarySchema.php
+++ b/src/Model/InvitationSummarySchema.php
@@ -191,10 +191,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['id'] = isset($data['id']) ? $data['id'] : null;
         $this->container['course_id'] = isset($data['course_id']) ? $data['course_id'] : null;
diff --git a/src/Model/ItemValuePairSchema.php b/src/Model/ItemValuePairSchema.php
index ae5098b..130d3c4 100644
--- a/src/Model/ItemValuePairSchema.php
+++ b/src/Model/ItemValuePairSchema.php
@@ -176,10 +176,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['item'] = isset($data['item']) ? $data['item'] : null;
         $this->container['value'] = isset($data['value']) ? $data['value'] : null;
diff --git a/src/Model/LaunchAuthOptionsSchema.php b/src/Model/LaunchAuthOptionsSchema.php
index 4572e6f..52a4653 100644
--- a/src/Model/LaunchAuthOptionsSchema.php
+++ b/src/Model/LaunchAuthOptionsSchema.php
@@ -186,10 +186,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['ip_address'] = isset($data['ip_address']) ? $data['ip_address'] : null;
         $this->container['fingerprint'] = isset($data['fingerprint']) ? $data['fingerprint'] : null;
diff --git a/src/Model/LaunchAuthSchema.php b/src/Model/LaunchAuthSchema.php
index b5e6d3a..3dd8a0d 100644
--- a/src/Model/LaunchAuthSchema.php
+++ b/src/Model/LaunchAuthSchema.php
@@ -191,10 +191,10 @@ public function getTypeAllowableValues()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['type'] = isset($data['type']) ? $data['type'] : 'cookies';
         $this->container['options'] = isset($data['options']) ? $data['options'] : null;
diff --git a/src/Model/LaunchHistoryListSchema.php b/src/Model/LaunchHistoryListSchema.php
index ba61a64..17fd9a1 100644
--- a/src/Model/LaunchHistoryListSchema.php
+++ b/src/Model/LaunchHistoryListSchema.php
@@ -171,10 +171,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['launch_history'] = isset($data['launch_history']) ? $data['launch_history'] : null;
     }
diff --git a/src/Model/LaunchHistorySchema.php b/src/Model/LaunchHistorySchema.php
index e25d8ac..4b182b1 100644
--- a/src/Model/LaunchHistorySchema.php
+++ b/src/Model/LaunchHistorySchema.php
@@ -255,10 +255,10 @@ public function getSuccessStatusAllowableValues()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['id'] = isset($data['id']) ? $data['id'] : null;
         $this->container['instance'] = isset($data['instance']) ? $data['instance'] : null;
diff --git a/src/Model/LaunchLinkRequestSchema.php b/src/Model/LaunchLinkRequestSchema.php
index 6ee7b1e..0098fdb 100644
--- a/src/Model/LaunchLinkRequestSchema.php
+++ b/src/Model/LaunchLinkRequestSchema.php
@@ -221,10 +221,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['expiry'] = isset($data['expiry']) ? $data['expiry'] : 120;
         $this->container['redirect_on_exit_url'] = isset($data['redirect_on_exit_url']) ? $data['redirect_on_exit_url'] : null;
diff --git a/src/Model/LaunchLinkSchema.php b/src/Model/LaunchLinkSchema.php
index a821fe3..555b17a 100644
--- a/src/Model/LaunchLinkSchema.php
+++ b/src/Model/LaunchLinkSchema.php
@@ -171,10 +171,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['launch_link'] = isset($data['launch_link']) ? $data['launch_link'] : null;
     }
diff --git a/src/Model/LearnerPreferenceSchema.php b/src/Model/LearnerPreferenceSchema.php
index b7cba7a..62de335 100644
--- a/src/Model/LearnerPreferenceSchema.php
+++ b/src/Model/LearnerPreferenceSchema.php
@@ -186,10 +186,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['audio_level'] = isset($data['audio_level']) ? $data['audio_level'] : null;
         $this->container['language'] = isset($data['language']) ? $data['language'] : null;
diff --git a/src/Model/LearnerSchema.php b/src/Model/LearnerSchema.php
index d88abab..80d0002 100644
--- a/src/Model/LearnerSchema.php
+++ b/src/Model/LearnerSchema.php
@@ -186,10 +186,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['id'] = isset($data['id']) ? $data['id'] : null;
         $this->container['email'] = isset($data['email']) ? $data['email'] : null;
diff --git a/src/Model/Lti13PlatformConfigurationSchema.php b/src/Model/Lti13PlatformConfigurationSchema.php
index 6728980..b1b2fbd 100644
--- a/src/Model/Lti13PlatformConfigurationSchema.php
+++ b/src/Model/Lti13PlatformConfigurationSchema.php
@@ -196,10 +196,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['client_id'] = isset($data['client_id']) ? $data['client_id'] : null;
         $this->container['platform_issuer_identifier'] = isset($data['platform_issuer_identifier']) ? $data['platform_issuer_identifier'] : null;
diff --git a/src/Model/Lti13ToolConfigurationSchema.php b/src/Model/Lti13ToolConfigurationSchema.php
index a8d5d85..d8874ff 100644
--- a/src/Model/Lti13ToolConfigurationSchema.php
+++ b/src/Model/Lti13ToolConfigurationSchema.php
@@ -186,10 +186,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['public_key'] = isset($data['public_key']) ? $data['public_key'] : null;
         $this->container['oidc_login_initiations_url'] = isset($data['oidc_login_initiations_url']) ? $data['oidc_login_initiations_url'] : null;
diff --git a/src/Model/MediaFileMetadataSchema.php b/src/Model/MediaFileMetadataSchema.php
index 7d8c0f0..ccc1fd7 100644
--- a/src/Model/MediaFileMetadataSchema.php
+++ b/src/Model/MediaFileMetadataSchema.php
@@ -187,10 +187,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['title'] = isset($data['title']) ? $data['title'] : null;
         $this->container['description'] = isset($data['description']) ? $data['description'] : null;
diff --git a/src/Model/MessageSchema.php b/src/Model/MessageSchema.php
index 8a41e27..2613814 100644
--- a/src/Model/MessageSchema.php
+++ b/src/Model/MessageSchema.php
@@ -171,10 +171,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['message'] = isset($data['message']) ? $data['message'] : null;
     }
diff --git a/src/Model/MetadataSchema.php b/src/Model/MetadataSchema.php
index a629e99..8204d97 100644
--- a/src/Model/MetadataSchema.php
+++ b/src/Model/MetadataSchema.php
@@ -201,10 +201,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['title'] = isset($data['title']) ? $data['title'] : null;
         $this->container['title_language'] = isset($data['title_language']) ? $data['title_language'] : null;
diff --git a/src/Model/ObjectiveSchema.php b/src/Model/ObjectiveSchema.php
index f98dbac..8d80648 100644
--- a/src/Model/ObjectiveSchema.php
+++ b/src/Model/ObjectiveSchema.php
@@ -282,10 +282,10 @@ public function getPreviousObjectiveSuccessAllowableValues()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['id'] = isset($data['id']) ? $data['id'] : null;
         $this->container['primary'] = isset($data['primary']) ? $data['primary'] : null;
diff --git a/src/Model/PaginatedList.php b/src/Model/PaginatedList.php
index f7a7aae..f63955f 100644
--- a/src/Model/PaginatedList.php
+++ b/src/Model/PaginatedList.php
@@ -171,10 +171,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['more'] = isset($data['more']) ? $data['more'] : null;
     }
diff --git a/src/Model/PermissionsSchema.php b/src/Model/PermissionsSchema.php
index 594cfc6..f5a55d0 100644
--- a/src/Model/PermissionsSchema.php
+++ b/src/Model/PermissionsSchema.php
@@ -176,10 +176,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['scopes'] = isset($data['scopes']) ? $data['scopes'] : null;
         $this->container['application_name'] = isset($data['application_name']) ? $data['application_name'] : null;
diff --git a/src/Model/PingSchema.php b/src/Model/PingSchema.php
index 25ae041..ce7f1e3 100644
--- a/src/Model/PingSchema.php
+++ b/src/Model/PingSchema.php
@@ -176,10 +176,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['api_message'] = isset($data['api_message']) ? $data['api_message'] : null;
         $this->container['current_time'] = isset($data['current_time']) ? $data['current_time'] : null;
diff --git a/src/Model/PostBackSchema.php b/src/Model/PostBackSchema.php
index ead6e0c..bee4574 100644
--- a/src/Model/PostBackSchema.php
+++ b/src/Model/PostBackSchema.php
@@ -232,10 +232,10 @@ public function getResultsFormatAllowableValues()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['url'] = isset($data['url']) ? $data['url'] : null;
         $this->container['auth_type'] = isset($data['auth_type']) ? $data['auth_type'] : 'UNDEFINED';
diff --git a/src/Model/PreviewLaunchLinkRequestSchema.php b/src/Model/PreviewLaunchLinkRequestSchema.php
index e83af1a..31e21a3 100644
--- a/src/Model/PreviewLaunchLinkRequestSchema.php
+++ b/src/Model/PreviewLaunchLinkRequestSchema.php
@@ -196,10 +196,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['expiry'] = isset($data['expiry']) ? $data['expiry'] : 120;
         $this->container['redirect_on_exit_url'] = isset($data['redirect_on_exit_url']) ? $data['redirect_on_exit_url'] : null;
diff --git a/src/Model/PrivateInvitationList.php b/src/Model/PrivateInvitationList.php
index 7df677a..9ca1baf 100644
--- a/src/Model/PrivateInvitationList.php
+++ b/src/Model/PrivateInvitationList.php
@@ -163,10 +163,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         parent::__construct($data);
 
diff --git a/src/Model/PrivateInvitationSchema.php b/src/Model/PrivateInvitationSchema.php
index 7f1b142..4eabf33 100644
--- a/src/Model/PrivateInvitationSchema.php
+++ b/src/Model/PrivateInvitationSchema.php
@@ -211,10 +211,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['id'] = isset($data['id']) ? $data['id'] : null;
         $this->container['course_id'] = isset($data['course_id']) ? $data['course_id'] : null;
diff --git a/src/Model/PrivateInvitationUpdateSchema.php b/src/Model/PrivateInvitationUpdateSchema.php
index 763c49c..b81ef65 100644
--- a/src/Model/PrivateInvitationUpdateSchema.php
+++ b/src/Model/PrivateInvitationUpdateSchema.php
@@ -186,10 +186,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['allow_launch'] = isset($data['allow_launch']) ? $data['allow_launch'] : null;
         $this->container['invitation_email'] = isset($data['invitation_email']) ? $data['invitation_email'] : null;
diff --git a/src/Model/PublicInvitationList.php b/src/Model/PublicInvitationList.php
index 4a2b35c..28438a9 100644
--- a/src/Model/PublicInvitationList.php
+++ b/src/Model/PublicInvitationList.php
@@ -163,10 +163,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         parent::__construct($data);
 
diff --git a/src/Model/PublicInvitationSchema.php b/src/Model/PublicInvitationSchema.php
index 2c4623e..6e6e167 100644
--- a/src/Model/PublicInvitationSchema.php
+++ b/src/Model/PublicInvitationSchema.php
@@ -226,10 +226,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['id'] = isset($data['id']) ? $data['id'] : null;
         $this->container['course_id'] = isset($data['course_id']) ? $data['course_id'] : null;
diff --git a/src/Model/PublicInvitationUpdateSchema.php b/src/Model/PublicInvitationUpdateSchema.php
index f254f78..2663cd9 100644
--- a/src/Model/PublicInvitationUpdateSchema.php
+++ b/src/Model/PublicInvitationUpdateSchema.php
@@ -191,10 +191,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['allow_launch'] = isset($data['allow_launch']) ? $data['allow_launch'] : null;
         $this->container['allow_new_registrations'] = isset($data['allow_new_registrations']) ? $data['allow_new_registrations'] : null;
diff --git a/src/Model/RegistrationListSchema.php b/src/Model/RegistrationListSchema.php
index b172ffc..bc4918e 100644
--- a/src/Model/RegistrationListSchema.php
+++ b/src/Model/RegistrationListSchema.php
@@ -176,10 +176,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['registrations'] = isset($data['registrations']) ? $data['registrations'] : null;
         $this->container['more'] = isset($data['more']) ? $data['more'] : null;
diff --git a/src/Model/RegistrationSchema.php b/src/Model/RegistrationSchema.php
index 478694b..67c8158 100644
--- a/src/Model/RegistrationSchema.php
+++ b/src/Model/RegistrationSchema.php
@@ -271,10 +271,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['id'] = isset($data['id']) ? $data['id'] : null;
         $this->container['instance'] = isset($data['instance']) ? $data['instance'] : null;
diff --git a/src/Model/ReportageAccountInfoSchema.php b/src/Model/ReportageAccountInfoSchema.php
index 574c5e9..d80ee13 100644
--- a/src/Model/ReportageAccountInfoSchema.php
+++ b/src/Model/ReportageAccountInfoSchema.php
@@ -211,10 +211,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['email'] = isset($data['email']) ? $data['email'] : null;
         $this->container['first_name'] = isset($data['first_name']) ? $data['first_name'] : null;
diff --git a/src/Model/ReportageAccountInfoUsageSchema.php b/src/Model/ReportageAccountInfoUsageSchema.php
index b04102e..a7897f6 100644
--- a/src/Model/ReportageAccountInfoUsageSchema.php
+++ b/src/Model/ReportageAccountInfoUsageSchema.php
@@ -186,10 +186,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['month_start'] = isset($data['month_start']) ? $data['month_start'] : null;
         $this->container['reg_count'] = isset($data['reg_count']) ? $data['reg_count'] : null;
diff --git a/src/Model/ReportageAuthTokenSchema.php b/src/Model/ReportageAuthTokenSchema.php
index dcc62a2..82c2848 100644
--- a/src/Model/ReportageAuthTokenSchema.php
+++ b/src/Model/ReportageAuthTokenSchema.php
@@ -176,10 +176,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['auth_enabled'] = isset($data['auth_enabled']) ? $data['auth_enabled'] : null;
         $this->container['query_string'] = isset($data['query_string']) ? $data['query_string'] : null;
diff --git a/src/Model/ReportageLinkSchema.php b/src/Model/ReportageLinkSchema.php
index e78f97f..7628871 100644
--- a/src/Model/ReportageLinkSchema.php
+++ b/src/Model/ReportageLinkSchema.php
@@ -171,10 +171,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['reportage_link'] = isset($data['reportage_link']) ? $data['reportage_link'] : null;
     }
diff --git a/src/Model/ResponseError.php b/src/Model/ResponseError.php
index 861f83c..8ca638a 100644
--- a/src/Model/ResponseError.php
+++ b/src/Model/ResponseError.php
@@ -171,10 +171,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['message'] = isset($data['message']) ? $data['message'] : null;
     }
diff --git a/src/Model/RuntimeInteractionSchema.php b/src/Model/RuntimeInteractionSchema.php
index 3876153..c6d000f 100644
--- a/src/Model/RuntimeInteractionSchema.php
+++ b/src/Model/RuntimeInteractionSchema.php
@@ -252,10 +252,10 @@ public function getTypeAllowableValues()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['id'] = isset($data['id']) ? $data['id'] : null;
         $this->container['type'] = isset($data['type']) ? $data['type'] : null;
diff --git a/src/Model/RuntimeObjectiveSchema.php b/src/Model/RuntimeObjectiveSchema.php
index 4826db5..e1a6bdb 100644
--- a/src/Model/RuntimeObjectiveSchema.php
+++ b/src/Model/RuntimeObjectiveSchema.php
@@ -249,10 +249,10 @@ public function getRuntimeObjectiveCompletionStatusAllowableValues()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['id'] = isset($data['id']) ? $data['id'] : null;
         $this->container['score_scaled'] = isset($data['score_scaled']) ? $data['score_scaled'] : null;
diff --git a/src/Model/RuntimeSchema.php b/src/Model/RuntimeSchema.php
index 9beda4d..4430c98 100644
--- a/src/Model/RuntimeSchema.php
+++ b/src/Model/RuntimeSchema.php
@@ -283,10 +283,10 @@ public function getRuntimeSuccessStatusAllowableValues()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['completion_status'] = isset($data['completion_status']) ? $data['completion_status'] : null;
         $this->container['credit'] = isset($data['credit']) ? $data['credit'] : null;
diff --git a/src/Model/ScoreSchema.php b/src/Model/ScoreSchema.php
index 3a3e150..a83a181 100644
--- a/src/Model/ScoreSchema.php
+++ b/src/Model/ScoreSchema.php
@@ -171,10 +171,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['scaled'] = isset($data['scaled']) ? $data['scaled'] : null;
     }
diff --git a/src/Model/SettingItem.php b/src/Model/SettingItem.php
index 1bbf1ec..589c072 100644
--- a/src/Model/SettingItem.php
+++ b/src/Model/SettingItem.php
@@ -216,10 +216,10 @@ public function getEffectiveValueSourceAllowableValues()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['id'] = isset($data['id']) ? $data['id'] : null;
         $this->container['effective_value'] = isset($data['effective_value']) ? $data['effective_value'] : null;
diff --git a/src/Model/SettingListSchema.php b/src/Model/SettingListSchema.php
index 321d1d8..ba252bd 100644
--- a/src/Model/SettingListSchema.php
+++ b/src/Model/SettingListSchema.php
@@ -171,10 +171,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['setting_items'] = isset($data['setting_items']) ? $data['setting_items'] : null;
     }
diff --git a/src/Model/SettingMetadata.php b/src/Model/SettingMetadata.php
index ec6ffcb..e2097f6 100644
--- a/src/Model/SettingMetadata.php
+++ b/src/Model/SettingMetadata.php
@@ -223,10 +223,10 @@ public function getLearningStandardVariantAllowableValues()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['default'] = isset($data['default']) ? $data['default'] : null;
         $this->container['data_type'] = isset($data['data_type']) ? $data['data_type'] : null;
diff --git a/src/Model/SettingValidValue.php b/src/Model/SettingValidValue.php
index bee2ae5..9d97f8d 100644
--- a/src/Model/SettingValidValue.php
+++ b/src/Model/SettingValidValue.php
@@ -176,10 +176,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['value'] = isset($data['value']) ? $data['value'] : null;
         $this->container['value_description'] = isset($data['value_description']) ? $data['value_description'] : null;
diff --git a/src/Model/SettingsIndividualSchema.php b/src/Model/SettingsIndividualSchema.php
index 82ef472..4e4a16b 100644
--- a/src/Model/SettingsIndividualSchema.php
+++ b/src/Model/SettingsIndividualSchema.php
@@ -181,10 +181,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['setting_id'] = isset($data['setting_id']) ? $data['setting_id'] : null;
         $this->container['value'] = isset($data['value']) ? $data['value'] : null;
diff --git a/src/Model/SettingsPostSchema.php b/src/Model/SettingsPostSchema.php
index a7e2ea4..f812020 100644
--- a/src/Model/SettingsPostSchema.php
+++ b/src/Model/SettingsPostSchema.php
@@ -171,10 +171,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['settings'] = isset($data['settings']) ? $data['settings'] : null;
     }
diff --git a/src/Model/SharedDataEntrySchema.php b/src/Model/SharedDataEntrySchema.php
index 263e646..33f6e04 100644
--- a/src/Model/SharedDataEntrySchema.php
+++ b/src/Model/SharedDataEntrySchema.php
@@ -176,10 +176,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['id'] = isset($data['id']) ? $data['id'] : null;
         $this->container['value'] = isset($data['value']) ? $data['value'] : null;
diff --git a/src/Model/StaticPropertiesSchema.php b/src/Model/StaticPropertiesSchema.php
index fc207e6..41b17ff 100644
--- a/src/Model/StaticPropertiesSchema.php
+++ b/src/Model/StaticPropertiesSchema.php
@@ -196,10 +196,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['completion_threshold'] = isset($data['completion_threshold']) ? $data['completion_threshold'] : null;
         $this->container['launch_data'] = isset($data['launch_data']) ? $data['launch_data'] : null;
diff --git a/src/Model/StringResultSchema.php b/src/Model/StringResultSchema.php
index de0807c..ae8879c 100644
--- a/src/Model/StringResultSchema.php
+++ b/src/Model/StringResultSchema.php
@@ -171,10 +171,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['result'] = isset($data['result']) ? $data['result'] : null;
     }
diff --git a/src/Model/TagListSchema.php b/src/Model/TagListSchema.php
index 389336f..491d099 100644
--- a/src/Model/TagListSchema.php
+++ b/src/Model/TagListSchema.php
@@ -171,10 +171,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['tags'] = isset($data['tags']) ? $data['tags'] : null;
     }
diff --git a/src/Model/TitleSchema.php b/src/Model/TitleSchema.php
index 94fe3af..f42ccd2 100644
--- a/src/Model/TitleSchema.php
+++ b/src/Model/TitleSchema.php
@@ -171,10 +171,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['title'] = isset($data['title']) ? $data['title'] : null;
     }
diff --git a/src/Model/TokenRequestSchema.php b/src/Model/TokenRequestSchema.php
index 528ee58..5a9e44c 100644
--- a/src/Model/TokenRequestSchema.php
+++ b/src/Model/TokenRequestSchema.php
@@ -176,10 +176,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['permissions'] = isset($data['permissions']) ? $data['permissions'] : null;
         $this->container['expiry'] = isset($data['expiry']) ? $data['expiry'] : null;
diff --git a/src/Model/UpdateApplicationSchema.php b/src/Model/UpdateApplicationSchema.php
index 5e0d47e..3b3800f 100644
--- a/src/Model/UpdateApplicationSchema.php
+++ b/src/Model/UpdateApplicationSchema.php
@@ -176,10 +176,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['name'] = isset($data['name']) ? $data['name'] : null;
         $this->container['allow_delete'] = isset($data['allow_delete']) ? $data['allow_delete'] : null;
diff --git a/src/Model/UpdateConnectorSchema.php b/src/Model/UpdateConnectorSchema.php
index f9e8223..b08c600 100644
--- a/src/Model/UpdateConnectorSchema.php
+++ b/src/Model/UpdateConnectorSchema.php
@@ -176,10 +176,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['configuration'] = isset($data['configuration']) ? $data['configuration'] : null;
         $this->container['enabled'] = isset($data['enabled']) ? $data['enabled'] : null;
diff --git a/src/Model/UpdateDispatchSchema.php b/src/Model/UpdateDispatchSchema.php
index df8caa2..36475d3 100644
--- a/src/Model/UpdateDispatchSchema.php
+++ b/src/Model/UpdateDispatchSchema.php
@@ -211,10 +211,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['allow_new_registrations'] = isset($data['allow_new_registrations']) ? $data['allow_new_registrations'] : null;
         $this->container['instanced'] = isset($data['instanced']) ? $data['instanced'] : null;
diff --git a/src/Model/UserInvitationList.php b/src/Model/UserInvitationList.php
index 34d0f5e..fbe0c24 100644
--- a/src/Model/UserInvitationList.php
+++ b/src/Model/UserInvitationList.php
@@ -163,10 +163,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         parent::__construct($data);
 
diff --git a/src/Model/UserInvitationSchema.php b/src/Model/UserInvitationSchema.php
index bd84a29..37658dc 100644
--- a/src/Model/UserInvitationSchema.php
+++ b/src/Model/UserInvitationSchema.php
@@ -196,10 +196,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['email'] = isset($data['email']) ? $data['email'] : null;
         $this->container['url'] = isset($data['url']) ? $data['url'] : null;
diff --git a/src/Model/UserInvitationSchemaRegistrationReport.php b/src/Model/UserInvitationSchemaRegistrationReport.php
index 8ee13ab..80ad148 100644
--- a/src/Model/UserInvitationSchemaRegistrationReport.php
+++ b/src/Model/UserInvitationSchemaRegistrationReport.php
@@ -187,10 +187,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['complete'] = isset($data['complete']) ? $data['complete'] : null;
         $this->container['success'] = isset($data['success']) ? $data['success'] : null;
diff --git a/src/Model/XapiAccount.php b/src/Model/XapiAccount.php
index 6c68dec..d3e66c6 100644
--- a/src/Model/XapiAccount.php
+++ b/src/Model/XapiAccount.php
@@ -177,10 +177,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['home_page'] = isset($data['home_page']) ? $data['home_page'] : null;
         $this->container['name'] = isset($data['name']) ? $data['name'] : null;
diff --git a/src/Model/XapiActivity.php b/src/Model/XapiActivity.php
index b73656f..65434a2 100644
--- a/src/Model/XapiActivity.php
+++ b/src/Model/XapiActivity.php
@@ -182,10 +182,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['object_type'] = isset($data['object_type']) ? $data['object_type'] : 'Activity';
         $this->container['id'] = isset($data['id']) ? $data['id'] : null;
diff --git a/src/Model/XapiActivityDefinition.php b/src/Model/XapiActivityDefinition.php
index f2d7777..4be238d 100644
--- a/src/Model/XapiActivityDefinition.php
+++ b/src/Model/XapiActivityDefinition.php
@@ -227,10 +227,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['name'] = isset($data['name']) ? $data['name'] : null;
         $this->container['description'] = isset($data['description']) ? $data['description'] : null;
diff --git a/src/Model/XapiAgentGroup.php b/src/Model/XapiAgentGroup.php
index 1797bc8..108a62a 100644
--- a/src/Model/XapiAgentGroup.php
+++ b/src/Model/XapiAgentGroup.php
@@ -217,10 +217,10 @@ public function getObjectTypeAllowableValues()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['object_type'] = isset($data['object_type']) ? $data['object_type'] : null;
         $this->container['name'] = isset($data['name']) ? $data['name'] : null;
diff --git a/src/Model/XapiAttachment.php b/src/Model/XapiAttachment.php
index 57072ac..b092b26 100644
--- a/src/Model/XapiAttachment.php
+++ b/src/Model/XapiAttachment.php
@@ -202,10 +202,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['usage_type'] = isset($data['usage_type']) ? $data['usage_type'] : null;
         $this->container['display'] = isset($data['display']) ? $data['display'] : null;
diff --git a/src/Model/XapiContext.php b/src/Model/XapiContext.php
index 3909c46..eae5854 100644
--- a/src/Model/XapiContext.php
+++ b/src/Model/XapiContext.php
@@ -212,10 +212,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['registration'] = isset($data['registration']) ? $data['registration'] : null;
         $this->container['instructor'] = isset($data['instructor']) ? $data['instructor'] : null;
diff --git a/src/Model/XapiContextActivity.php b/src/Model/XapiContextActivity.php
index dd659b4..bb06902 100644
--- a/src/Model/XapiContextActivity.php
+++ b/src/Model/XapiContextActivity.php
@@ -187,10 +187,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['parent'] = isset($data['parent']) ? $data['parent'] : null;
         $this->container['grouping'] = isset($data['grouping']) ? $data['grouping'] : null;
diff --git a/src/Model/XapiCredentialAuthTypeSchema.php b/src/Model/XapiCredentialAuthTypeSchema.php
index 308a42e..bdfeaa6 100644
--- a/src/Model/XapiCredentialAuthTypeSchema.php
+++ b/src/Model/XapiCredentialAuthTypeSchema.php
@@ -186,10 +186,10 @@ public function getXapiCredentialAuthTypeAllowableValues()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['xapi_credential_auth_type'] = isset($data['xapi_credential_auth_type']) ? $data['xapi_credential_auth_type'] : null;
     }
diff --git a/src/Model/XapiCredentialPermissionsLevelSchema.php b/src/Model/XapiCredentialPermissionsLevelSchema.php
index 41dc7f4..83c50d8 100644
--- a/src/Model/XapiCredentialPermissionsLevelSchema.php
+++ b/src/Model/XapiCredentialPermissionsLevelSchema.php
@@ -192,10 +192,10 @@ public function getXapiCredentialPermissionsLevelAllowableValues()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['xapi_credential_permissions_level'] = isset($data['xapi_credential_permissions_level']) ? $data['xapi_credential_permissions_level'] : null;
     }
diff --git a/src/Model/XapiCredentialPostSchema.php b/src/Model/XapiCredentialPostSchema.php
index e6bf9d0..a02b870 100644
--- a/src/Model/XapiCredentialPostSchema.php
+++ b/src/Model/XapiCredentialPostSchema.php
@@ -196,10 +196,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['name'] = isset($data['name']) ? $data['name'] : null;
         $this->container['info'] = isset($data['info']) ? $data['info'] : null;
diff --git a/src/Model/XapiCredentialPutSchema.php b/src/Model/XapiCredentialPutSchema.php
index 36be88d..e15e5e9 100644
--- a/src/Model/XapiCredentialPutSchema.php
+++ b/src/Model/XapiCredentialPutSchema.php
@@ -201,10 +201,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['id'] = isset($data['id']) ? $data['id'] : null;
         $this->container['name'] = isset($data['name']) ? $data['name'] : null;
diff --git a/src/Model/XapiCredentialSchema.php b/src/Model/XapiCredentialSchema.php
index 6d97a6c..8c97dc5 100644
--- a/src/Model/XapiCredentialSchema.php
+++ b/src/Model/XapiCredentialSchema.php
@@ -201,10 +201,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['id'] = isset($data['id']) ? $data['id'] : null;
         $this->container['name'] = isset($data['name']) ? $data['name'] : null;
diff --git a/src/Model/XapiCredentialsListSchema.php b/src/Model/XapiCredentialsListSchema.php
index 07093f4..8538d2d 100644
--- a/src/Model/XapiCredentialsListSchema.php
+++ b/src/Model/XapiCredentialsListSchema.php
@@ -176,10 +176,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['xapi_credentials'] = isset($data['xapi_credentials']) ? $data['xapi_credentials'] : null;
         $this->container['more'] = isset($data['more']) ? $data['more'] : null;
diff --git a/src/Model/XapiEndpointSchema.php b/src/Model/XapiEndpointSchema.php
index 51392df..79e568f 100644
--- a/src/Model/XapiEndpointSchema.php
+++ b/src/Model/XapiEndpointSchema.php
@@ -181,10 +181,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['url'] = isset($data['url']) ? $data['url'] : null;
         $this->container['user_name'] = isset($data['user_name']) ? $data['user_name'] : null;
diff --git a/src/Model/XapiInteractionComponent.php b/src/Model/XapiInteractionComponent.php
index 4f189da..6248e6a 100644
--- a/src/Model/XapiInteractionComponent.php
+++ b/src/Model/XapiInteractionComponent.php
@@ -177,10 +177,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['id'] = isset($data['id']) ? $data['id'] : null;
         $this->container['description'] = isset($data['description']) ? $data['description'] : null;
diff --git a/src/Model/XapiResult.php b/src/Model/XapiResult.php
index c448aac..8d47a5b 100644
--- a/src/Model/XapiResult.php
+++ b/src/Model/XapiResult.php
@@ -197,10 +197,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['score'] = isset($data['score']) ? $data['score'] : null;
         $this->container['success'] = isset($data['success']) ? $data['success'] : null;
diff --git a/src/Model/XapiScore.php b/src/Model/XapiScore.php
index 1b99f34..1b77749 100644
--- a/src/Model/XapiScore.php
+++ b/src/Model/XapiScore.php
@@ -187,10 +187,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['scaled'] = isset($data['scaled']) ? $data['scaled'] : null;
         $this->container['raw'] = isset($data['raw']) ? $data['raw'] : null;
diff --git a/src/Model/XapiStatement.php b/src/Model/XapiStatement.php
index 7ecf128..6943b9a 100644
--- a/src/Model/XapiStatement.php
+++ b/src/Model/XapiStatement.php
@@ -232,10 +232,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['id'] = isset($data['id']) ? $data['id'] : null;
         $this->container['actor'] = isset($data['actor']) ? $data['actor'] : null;
diff --git a/src/Model/XapiStatementPipeListSchema.php b/src/Model/XapiStatementPipeListSchema.php
index 57e99ac..b519ddb 100644
--- a/src/Model/XapiStatementPipeListSchema.php
+++ b/src/Model/XapiStatementPipeListSchema.php
@@ -171,10 +171,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['xapi_statement_pipes'] = isset($data['xapi_statement_pipes']) ? $data['xapi_statement_pipes'] : null;
     }
diff --git a/src/Model/XapiStatementPipePostSchema.php b/src/Model/XapiStatementPipePostSchema.php
index 8f22323..d7c580b 100644
--- a/src/Model/XapiStatementPipePostSchema.php
+++ b/src/Model/XapiStatementPipePostSchema.php
@@ -176,10 +176,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['source'] = isset($data['source']) ? $data['source'] : null;
         $this->container['target'] = isset($data['target']) ? $data['target'] : null;
diff --git a/src/Model/XapiStatementPipePutSchema.php b/src/Model/XapiStatementPipePutSchema.php
index 6376c1f..06599cc 100644
--- a/src/Model/XapiStatementPipePutSchema.php
+++ b/src/Model/XapiStatementPipePutSchema.php
@@ -176,10 +176,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['source'] = isset($data['source']) ? $data['source'] : null;
         $this->container['target'] = isset($data['target']) ? $data['target'] : null;
diff --git a/src/Model/XapiStatementPipeSchema.php b/src/Model/XapiStatementPipeSchema.php
index 29f305b..3ff5bc6 100644
--- a/src/Model/XapiStatementPipeSchema.php
+++ b/src/Model/XapiStatementPipeSchema.php
@@ -201,10 +201,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['id'] = isset($data['id']) ? $data['id'] : null;
         $this->container['last_forwarded_statement_date'] = isset($data['last_forwarded_statement_date']) ? $data['last_forwarded_statement_date'] : null;
diff --git a/src/Model/XapiStatementReference.php b/src/Model/XapiStatementReference.php
index bae9ad9..c651860 100644
--- a/src/Model/XapiStatementReference.php
+++ b/src/Model/XapiStatementReference.php
@@ -177,10 +177,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['object_type'] = isset($data['object_type']) ? $data['object_type'] : 'StatementRef';
         $this->container['id'] = isset($data['id']) ? $data['id'] : null;
diff --git a/src/Model/XapiStatementResult.php b/src/Model/XapiStatementResult.php
index d1730a1..219486d 100644
--- a/src/Model/XapiStatementResult.php
+++ b/src/Model/XapiStatementResult.php
@@ -177,10 +177,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['statements'] = isset($data['statements']) ? $data['statements'] : null;
         $this->container['more'] = isset($data['more']) ? $data['more'] : null;
diff --git a/src/Model/XapiVerb.php b/src/Model/XapiVerb.php
index bcde7e7..60dc798 100644
--- a/src/Model/XapiVerb.php
+++ b/src/Model/XapiVerb.php
@@ -177,10 +177,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['id'] = isset($data['id']) ? $data['id'] : null;
         $this->container['display'] = isset($data['display']) ? $data['display'] : null;
diff --git a/src/Model/ZoomiCompanyId.php b/src/Model/ZoomiCompanyId.php
index 2f3a753..3ebf541 100644
--- a/src/Model/ZoomiCompanyId.php
+++ b/src/Model/ZoomiCompanyId.php
@@ -171,10 +171,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['zoomi_company_id'] = isset($data['zoomi_company_id']) ? $data['zoomi_company_id'] : null;
     }
diff --git a/src/Model/ZoomiCourseOptionsSchema.php b/src/Model/ZoomiCourseOptionsSchema.php
index c7c011c..c2c1724 100644
--- a/src/Model/ZoomiCourseOptionsSchema.php
+++ b/src/Model/ZoomiCourseOptionsSchema.php
@@ -176,10 +176,10 @@ public function getModelName()
     /**
      * Constructor
      *
-     * @param mixed[] $data Associated array of property values
+     * @param mixed[]|null $data Associated array of property values
      *                      initializing the model
      */
-    public function __construct(array $data = null)
+    public function __construct(?array $data = null)
     {
         $this->container['nti'] = isset($data['nti']) ? $data['nti'] : null;
         $this->container['cta'] = isset($data['cta']) ? $data['cta'] : null;