[Moshi 2] Null-safe adapter returned for non-nullable type

[mpartel-oura]

In master, Moshi.adapter<UserDefinedClass>() currently returns a null-safe adapter, meaning it behaves the same as Moshi.adapter<UserDefinedClass?>(). This test shows the problem. Adding println(generatedAdapter.fromJson("null")) to it indeed prints null, despite the type system thinking it can't.

I found this while trying to better understand where Moshi 2's nullability story is heading. Relatedly, I'm wondering, will nullability in nested types be supported before release?