code: def _send_event_to_project(self, project_id, action, event):
          
          try:
              project_listeners = self._listeners[project_id]
          except KeyError:
              return
          for listener in project_listeners:
              listener.put_nowait((action, event, {}))
docs: Send an event to all the client listening for notifications for
          this project
  
          :param project: Project where we need to send the event
          :param action: Action name
          :param event: Event to send