code: def create_server_and_run_forever(self, loop=None, **server_config):
          
          if loop is None:
              import asyncio
              loop = asyncio.get_event_loop()
  
          self.create_server(loop=loop, **server_config)
          try:
              loop.run_forever()
          except KeyboardInterrupt:
              pass
docs: Helper function which constructs an HTTP server and listens the
          loop forever.
  
          This function exists only to remove boilerplate code for starting
          up a growler app.
  
          Args:
              **server_config: These keyword arguments are forwarded
                  directly to the BaseEventLoop.create_server function.
                  Consult their documentation for details.
          Parameters:
              loop (asyncio.BaseEventLoop): Optional parameter for specifying
                  an event loop which will handle socket setup.
  
              **server_config: These keyword arguments are forwarded directly to
                  the create_server function.