``` open class Parent(val parentValue: String = "p...

# getting-started

[thatadamedwards]

open class Parent(val parentValue: String = "parent value")

data class Child(val childValue: String = "child value"): Parent("child value")

val child = Child("whatever")
val copy = child.copy("who cares")

copy.parentValue == "child value" // this is false
copy.parentValue == "parent value" //this is true