code: func (a Aggregations) KeyedDateHistogram(name string) (*AggregationBucketKeyedHistogramItems, bool) {
  	if raw, found := a[name]; found {
  		agg := new(AggregationBucketKeyedHistogramItems)
  		if raw == nil {
  			return agg, true
  		}
  		if err := json.Unmarshal(raw, agg); err == nil {
  			return agg, true
  		}
  	}
  	return nil, false
  }
docs: // KeyedDateHistogram returns date histogram aggregation results for keyed responses.
  //
  // See: https://www.elastic.co/guide/en/elasticsearch/reference/7.0/search-aggregations-bucket-datehistogram-aggregation.html#_keyed_response_3