FILE: smartcastFromArgument.kt
    public abstract interface A : R|kotlin/Any| {
        public abstract fun foo(): R|kotlin/Unit|

    }
    public final fun takeA(a: R|A|): R|kotlin/Boolean| {
        ^takeA Boolean(true)
    }
    public final fun test(a: R|kotlin/Any|): R|kotlin/Unit| {
        when () {
            R|/takeA|(when (lval <elvis>: R|A?| = (R|<local>/a| as? R|A|)) {
                ==($subj$, Null(null)) ->  {
                    ^test Unit
                }
                else ->  {
                    R|<local>/<elvis>|
                }
            }
            ) ->  {
                R|<local>/a|.R|/A.foo|()
            }
        }

    }