code: func (s *SearchService) TrackTotalHits(trackTotalHits interface{}) *SearchService {
  	s.searchSource = s.searchSource.TrackTotalHits(trackTotalHits)
  	return s
  }
docs: // TrackTotalHits controls how the total number of hits should be tracked.
  // Defaults to 10000 which will count the total hit accurately up to 10,000 hits.
  //
  // See https://www.elastic.co/guide/en/elasticsearch/reference/7.0/index-modules-index-sorting.html#early-terminate
  // for details.