icon_name: Optional[str] = None

 @dataclass

 class StanzaSent(ApplicationEvent):

     name: str = field(init=False, default='stanza-sent')

     def mark_as_read(self, account: str, jid: JID) -> None:

         chat = self._chats.get((account, jid))

             chat.reset_unread()

     def toggle_chat_pinned(self, account: str, jid: JID) -> None:

         row = self._chats[(account, jid)]

         self.register_events([

             ('notification', ged.GUI2, self._on_notification),

         ])

         for client in app.get_clients():

         client = app.get_client(event.account)

         client.connect_signal('state-changed', self._on_client_state_changed)

     def _on_client_state_changed(self,

                                  client: Client,

                                  _signal_name: str,