public open class A : R|kotlin/Any| {
    public open operator fun foo(@R|kotlin/annotations/jvm/internal/DefaultNull|() x: R|ft<kotlin/Int, kotlin/Int?>|! = Null(null)): R|kotlin/Unit|

    public open operator fun bar(@R|kotlin/annotations/jvm/internal/DefaultNull|() x: R|kotlin/Int| = Null(null)): R|kotlin/Unit|

    public constructor(): R|A|

}
public open class B<T> : R|kotlin/Any| {
    public open operator fun foo(@R|kotlin/annotations/jvm/internal/DefaultNull|() t: R|ft<T, T?>|! = Null(null)): R|kotlin/Unit|

    public constructor<T>(): R|B<T>|

}
