code: def disconnectAll(self):
          '''
          Disconnect all the clients NOW, regardless if they process a request
          at the moment.
          '''
          if not self.connections:
              return defer.succeed(None)
          result = self._notifier.wait('idle')
          for connection in self.connections:
              connection.transport.loseConnection()
          return resulf disconnectAll(self):
          '''
          Disconnect all the clients NOW, regardless if they process a request
          at the moment.
          '''
          if not self.connections:
              return defer.succeed(None)
          result = self._notifier.wait('idle')
          for connection in self.connections:
              connection.transport.loseConnection()
          return result
docs: Disconnect all the clients NOW, regardless if they process a request
          at the moment.