FILE: typePredicate.kt
    public final fun checkIsString(x: R|kotlin/Any|): R|kotlin/Boolean|
        [R|Contract description]
         <
            Returns(TRUE) -> x is kotlin/String
            Returns(FALSE) -> x !is kotlin/String
        >
     {
        [StubStatement]
        ^checkIsString (R|<local>/x| is R|kotlin/String|)
    }
    public final fun test(x: R|kotlin/Any|): R|kotlin/Unit| {
        when () {
            R|/checkIsString|(R|<local>/x|) ->  {
                R|<local>/x|.R|kotlin/String.length|
            }
            else ->  {
                R|<local>/x|.<Unresolved name: length>#
            }
        }

    }
