code: def promoteChatMember(self, chat_id, user_id,
                            can_change_info=None,
                            can_post_messages=None,
                            can_edit_messages=None,
                            can_delete_messages=None,
                            can_invite_users=None,
                            can_restrict_members=None,
                            can_pin_messages=None,
                            can_promote_members=None):
          
          p = _strip(locals())
          return self._api_request('promoteChatMember', _rectify(p))
docs: See: https://core.telegram.org/bots/api#promotechatmember