code: def get_metrics(self, path, from_time, to_time, metrics, view, params=None):
      
      if not params:
        params = { }
      if from_time:
        params['from'] = from_time.isoformat()
      if to_time:
        params['to'] = to_time.isoformat()
      if metrics:
        params['metrics'] = metrics
      if view:
        params['view'] = view
      resp = self.get(path, params=params)
      return types.ApiList.from_json_dict(resp, self, types.ApiMetric)
docs: Generic function for querying metrics.
  
      @param from_time: A datetime; start of the period to query (optional).
      @param to_time: A datetime; end of the period to query (default = now).
      @param metrics: List of metrics to query (default = all).
      @param view: View to materialize ('full' or 'summary')
      @param params: Other query parameters.
      @return: List of metrics and their readings.