<Kotlin compiler reports unused expression in cons...

# stackoverflow

[user]

Kotlin compiler reports unused expression in constructor for builder taking vararg lambdas
We have a relatively simple builder pattern we use for test data generator in Kotlin.
The builders follow the pattern:
class ThingBuilder private constructor(
var param1: Int = 1,
var param2: Boolean = true
) {
private constructor(vararg inits: ThingBuilder.(ThingBuilder) -> Unit) : this() {
inits.forEach { it(this) }
}

fun build(): Thing {
return Thing(
param1,
param2
)
}

companion object {
fun...