code: def aggregate_series(self, key, aggregate, start=None, end=None,
                           interval=None, namespace=None, cache=None,
                           percentile=None):
          
          return self.make_context(key=key, aggregate=aggregate, start=start,
                                   end=end, interval=interval,
                                   namespace=namespace, cache=cache,
                                   percentile=percentile).aggregate_series()
docs: Get a time series of gauge aggregates