code: def make_driver(loop=None):
      ''' Returns a stop driver. 
      
      The optional loop argument can be provided to use the driver in another 
      loop than the default one.
  
      Parameters
      -----------
      loop: BaseEventLoop
          The event loop to use instead of the default one.
      '''
      loop = loop or asyncio.get_event_loop()
  
      def stop(i = None):
          loop.stop()
  
      def driver(sink):
          ''' The stop driver stops the asyncio event loop.
          The event loop is stopped as soon as an event is received on the 
          control observable or when it completes (both in case of success or 
          error).
  
          Parameters
          ----------
              sink: Sink
          '''
          sink.control.subscribe(
              on_next=stop,
              on_error=stop,
              on_completed=stop)
          return None
  
      return Component(call=driver, input=Sinkf make_driver(loop=None):
      ''' Returns a stop driver. 
      
      The optional loop argument can be provided to use the driver in another 
      loop than the default one.
  
      Parameters
      -----------
      loop: BaseEventLoop
          The event loop to use instead of the default one.
      '''
      loop = loop or asyncio.get_event_loop()
  
      def stop(i = None):
          loop.stop()
  
      def driver(sink):
          ''' The stop driver stops the asyncio event loop.
          The event loop is stopped as soon as an event is received on the 
          control observable or when it completes (both in case of success or 
          error).
  
          Parameters
          ----------
              sink: Sink
          '''
          sink.control.subscribe(
              on_next=stop,
              on_error=stop,
              on_completed=stop)
          return None
  
      return Component(call=driver, input=Sink)
docs: Returns a stop driver. 
      
      The optional loop argument can be provided to use the driver in another 
      loop than the default one.
  
      Parameters
      -----------
      loop: BaseEventLoop
          The event loop to use instead of the default one.