code: def create_group_member(self, member):
          
          data = self._serialize_object(member)
          return Trigger(self._post(self._service_url(['triggers', 'groups', 'members']), data))
docs: Create a new member trigger for a parent trigger.
  
          :param member: Group member trigger to be created
          :type member: GroupMemberInfo
          :return: A member Trigger object