val worksModule = SerializersModule { 
        polymorphic(Block::class) {
            subclass(Comment::class)
            subclass(Body::class)
        }
    }
    val works = Json {
        serializersModule = worksModule
    }
    
    val doesNotWork = Json {
        serializersModule = SerializersModule {
            polymorphic(Block::class) {
                subclass(Comment::class.java)
                subclass(Body::class)
            }
        }
    }