code: def fetch_all(self, R, depth=1, **kwargs):
          "Request multiple objects from API"
          d, e = self._fetcher.fetch_all(R, depth, kwargs)
          if e: raise e
          return f fetch_all(self, R, depth=1, **kwargs):
          "Request multiple objects from API"
          d, e = self._fetcher.fetch_all(R, depth, kwargs)
          if e: raise e
          return d
docs: Request multiple objects from API