code: def _store_instance_id(self):
          '''
          Run at the initialization before calling any code at agent-side.
          Ensures that descriptor holds our value, this effectively creates a
          lock on the descriptor - if other instance is running somewhere out
          there it would get the notification update and suicide.
          '''
  
          def do_set(desc):
              desc.instance_id = self._instance_id
              desc.under_restart = None
  
          return self.update_descriptor(do_setf _store_instance_id(self):
          '''
          Run at the initialization before calling any code at agent-side.
          Ensures that descriptor holds our value, this effectively creates a
          lock on the descriptor - if other instance is running somewhere out
          there it would get the notification update and suicide.
          '''
  
          def do_set(desc):
              desc.instance_id = self._instance_id
              desc.under_restart = None
  
          return self.update_descriptor(do_set)
docs: Run at the initialization before calling any code at agent-side.
          Ensures that descriptor holds our value, this effectively creates a
          lock on the descriptor - if other instance is running somewhere out
          there it would get the notification update and suicide.