code: def add_peer_to_group(self, group_jid, peer_jid):
          
          log.info("[+] Requesting to add user {} into the group {}".format(peer_jid, group_jid))
          return self._send_xmpp_element(group_adminship.AddToGroupRequest(group_jid, peer_jid))
docs: Adds someone to a group
  
          :param group_jid: The JID of the group into which to add a user
          :param peer_jid: The JID of the user to add