code: func (b *BoolQueryBuilder) Build() (*BoolQuery, error) {
  	boolQuery := BoolQuery{}
  
  	if b.filterQueryBuilder != nil {
  		filters, err := b.filterQueryBuilder.Build()
  		if err != nil {
  			return nil, err
  		}
  		boolQuery.Filters = filters
  	}
  
  	return &boolQuery, nil
  }
docs: // Build builds and return a bool query builder