FILE: invokeCustomTypeExt.kt
    public final class Foo : R|kotlin/Any| {
        public constructor(): R|Foo| {
            super<R|kotlin/Any|>()
        }

    }
    public final operator fun R|Foo|.invoke(): R|kotlin/Unit| {
    }
    public final fun foo(): R|kotlin/Unit| {
        lval x: R|Foo| = R|/Foo.Foo|()
        R|<local>/x|.R|/invoke|()
    }
