Even better: it has an optional source generator now! So, at compile time, C# can be generated. This can be at two levels: (1) just generate metadata so runtime

Even better: it has an optional source generator now! So, at compile time, C# can be generated. This can be at two levels: (1) just generate metadata so runtime reflection is not needed, or (2) also generate code that does the serialisation or deserialization itself. Pretty cool!