Leonid Startsev
de128a5406
Interfaces (regular and sealed) are by default polymorphic. To benefit from sealing (i.e. knowledge of all inheritors in compile-time), @Serializable annotation may be added on sealed interface, generating the same serializer that can be used for sealed classes. Synthetic nested classes are not generated in DEFAULT_IMPLS mode because it causes problems when adding a synthetic companion to an interface. Fixes https://github.com/Kotlin/kotlinx.serialization/issues/1576