code: def create_rest_client_class(name, apis, BaseClass=RestClient):
      
  
      apis_with_actions = list(itertools.chain.from_iterable([ zip([api] * len(api.actions), api.actions) for api in apis]))
  
      api_funcs = [create_api_call_func(api, verb) for api, verb in apis_with_actions]
      api_funcs.extend([create_async_api_call_func(api, verb) for api, verb in apis_with_actions])
      api_mapper = dict([ (f.__name__, f) for f in api_funcs ])
  
      # Adapted from :
      # http://stackoverflow.com/questions/15247075/how-can-i-dynamically-create-derived-classes-from-a-base-class
      def __init__(self, thread_count=_ASYNC_WORKER_THREAD_COUNT, **reqargs):
          BaseClass.__init__(self)
          setattr(self, 'reqargs', read_only_dict(reqargs))
          self._executor = concurrent.futures.ThreadPoolExecutor(thread_count)
  
      api_mapper['__init__'] =  __init__
  
      ClientClass = type(_CLIENT_NAME_FMT.format(name), (BaseClass,), api_mapper)
      return ClientClass
docs: Generate the api call functions and attach them to the generated
      RestClient subclass with the name <Service>Client.