// ACTION_CLASS: org.jetbrains.kotlin.idea.actions.generate.KotlinGenerateSecondaryConstructorAction
class Foo<U> : Base<U, Int> {
    val x = 1

    <caret>constructor(x: U) : super(x)
    constructor(x: U, y: Int?) : super(x, y)

    fun foo() {

    }

    fun bar() {

    }
}