code: def next(self):
          
          try:
              return self.results.pop(0)
          except IndexError:
              if self.next_uri is None:
                  raise StopIteration()
              else:
                  if not self.next_uri:
                      if self.domain:
                          self.results = self.list_method(self.domain)
                      else:
                          self.results = self.list_method()
                  else:
                      args = self.extra_args
                      self.results = self._list_method(self.next_uri, *args)
                  self.next_uri = self.manager._paging.get(
                          self.paging_service, {}).get("next_uri")
          # We should have more results.
          try:
              return self.results.pop(0)
          except IndexError:
              raise StopIteration()
docs: Return the next available item. If there are no more items in the
          local 'results' list, check if there is a 'next_uri' value. If so,
          use that to get the next page of results from the API, and return
          the first item from that query.