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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def get_membership(self):
 """Get your membership. Note that your membership may not exist. For example, you do not have a membership in a former group. Also, the group returned by the API when rejoining a former group does not contain your membership. You must call :func:`refresh_from_server` to update the list of members. :return: your membership in the group :rtype: :class:`~groupy.api.memberships.Member` :raises groupy.exceptions.MissingMembershipError: if your membership is not in the group data """

        user_id = self._user.me['user_id']
        for member in self.members:
            if member.user_id == user_id:
                return member
        raise exceptions.MissingMembershipError(self.group_id, user_id)