groovy dependencies { implementation "org.jetbrains.kotlinx:kotlinx-serialization-json:1.3.0-M1" } kotlin @Serializable data class User(val name: String, val age: Int) kotlin import kotlinx.serialization.json.Json fun main() { val user = User("John Doe", 30) val json = Json.encodeToString(User.serializer(), user) val parsedUser = Json.decodeFromString<User>(json) }