@classmethod
def get_class_action_url_lazy(cls, action, *args, **kwargs):
    """
        `action` needs to be a valid Python identifier.
        """
    url_name = cls.get_action_url_formatter(action)
    attr_name = '_%s_url' % action
    return cls.get_class_url_lazy(url_name, attr_name, *args, **kwargs)
