Return the endpoint base on the view's action
    :param action:
    :return:

def _get_action_endpoint(action):
    """
    Return the endpoint base on the view's action
    :param action:
    :return:
    """
    _endpoint = None
    if is_method(action):
        if hasattr(action, "_rule_cache"):
            rc = action._rule_cache
            if rc:
                k = list(rc.keys())[0]
                rules = rc[k]
                len_rules = len(rules)
                if len_rules == 1:
                    rc_kw = rules[0][1]
                    _endpoint = rc_kw.get("endpoint", None)
                    if not _endpoint:
                        _endpoint = _build_endpoint_route_name(action)
                elif len_rules > 1:
                    _prefix = _build_endpoint_route_name(action)
                    for r in Mocha._app.url_map.iter_rules():
                        if ('GET' in r.methods or 'POST' in r.methods) \
                                and _prefix in r.endpoint:
                            _endpoint = r.endpoint
                            break
    return _endpoint