code: def map(requests, prefetch=True, size=None):
      
  
      if size:
          pool = Pool(size)
          pool.map(send, requests)
          pool.join()
      else:
          jobs = [gevent.spawn(send, r) for r in requests]
          gevent.joinall(jobs)
  
      if prefetch:
          [r.response.content for r in requests]
  
      return [r.response for r in requests]
docs: Concurrently converts a list of Requests to Responses.
  
      :param requests: a collection of Request objects.
      :param prefetch: If False, the content will not be downloaded immediately.
      :param size: Specifies the number of requests to make at a time. If None, no throttling occurs.