code: func summarizeCons(series []models.Series) (consolidation.Consolidator, consolidation.Consolidator) {
  	for _, serie := range series {
  		if serie.QueryCons != 0 {
  			return serie.Consolidator, serie.QueryCons
  		}
  	}
  	return series[0].Consolidator, series[0].QueryCons
  }
docs: // summarizeCons returns the first explicitly specified Consolidator, QueryCons for the given set of input series,
  // or the first one, otherwise.