Fluent methods for data class in kotlin

Question

We are familiar with fluent interfaces for calling methods in java and other programming languages. For eg:

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Answer 1

Thanks to Zsmb13 and Christin for the answer, but if someone wants to use immutable fields I have another solution

data class Foo(val fooString: String = "", val fooInt: Int = 0) {
    fun increaseTwo() = copy(fooInt = fooInt + 2)
    fun increaseThree() = copy(fooInt = fooInt + 3)
}

And you can use it like this

println( Foo("foo",2).increaseTwo().increaseThree())

Output :

Foo(fooString=foo, fooInt=7)