FILE: concurrent.kt
    @R|kotlin/jvm/Volatile|() public final property xx(var): R|kotlin/Int| = STUB
        public get(): R|kotlin/Int|
        public set(value: R|kotlin/Int|): R|kotlin/Unit|
    @R|kotlin/jvm/Synchronized|() public final function foo(): R|kotlin/Unit| {
        return@@@foo STUB
    }
