code: func (s *translateStore) TranslateColumnToString(index string, value uint64) (string, error) {
  	s.mu.RLock()
  	if idx := s.cols[index]; idx != nil {
  		if ret, ok := idx.reverse[value]; ok {
  			s.mu.RUnlock()
  			return ret, nil
  		}
  	}
  	s.mu.RUnlock()
  	return "", nil
  }
docs: // TranslateColumnToString converts a uint64 id to its associated string value.
  // If the id is not associated with a string value then a blank string is returned.