Kotlin data class of RealmObject

Realm doesn’t support Data classes currently. You can see an example of how to write Realm compatible model classes in Kotlin here: https://github.com/realm/realm-java/tree/master/examples/kotlinExample/src/main/kotlin/io/realm/examples/kotlin/model

public open class Person(
        @PrimaryKey public open var name: String = "",
        public open var age: Int = 0,
        public open var dog: Dog? = null,
        public open var cats: RealmList<Cat> = RealmList(),
        @Ignore public open var tempReference: Int = 0,
        public open var id: Long = 0
) : RealmObject() {