code: def schedule(self, callback, *args, **kwargs):
          
          self._executor.submit(callback, *args, **kwargs)
docs: Schedule the callback to be called asynchronously in a thread pool.
  
          Args:
              callback (Callable): The function to call.
              args: Positional arguments passed to the function.
              kwargs: Key-word arguments passed to the function.
  
          Returns:
              None