def XXX_REMOVEME(func):
    """Decorator for dead code removal
    """
    @wraps(func)
    def decorator(self, *args, **kwargs):
        msg = "~~~~~~~ XXX REMOVEME marked method called: {}.{}".format(
            self.__class__.__name__, func.func_name)
        raise RuntimeError(msg)
        return func(self, *args, **kwargs)
    return decorator