@classmethod
def get_by_user_id(cls, user_id, token=None):
    """
        Creates Channel object by Slack user id (1:1 messages with bot)
        :param user_id: str
        :param token: str
        :return:
        """
    channel_id = cls.using(token)._fetch(method='im.open', return_resource=
        'channel', user=user_id)['id']
    return cls(channel_id)
