data class DataClass constructor(intProp: Int, stringProp: String) {
        val intProp: Int
        val nonConstructorProp: Int = 0
        val stringProp: String
        operator fun component1(): Int
        operator fun component2(): String
        fun copy(intProp: Int = ..., stringProp: String = ...): DataClass
        override fun equals(other: Any?): Boolean
        override fun hashCode(): Int
        override fun toString(): String
    }
    data object DataObject {
        override fun equals(other: Any?): Boolean
        override fun hashCode(): Int
        override fun toString(): String
    }