response.go
func (qr *QueryResponse) Result() QueryResult {
	if len(qr.ResultList) == 0 {
		return nil
	}
	return qr.ResultList[0]
}
func (qr *QueryResponse) Result() QueryResult {
	if len(qr.ResultList) == 0 {
		return nil
	}
	return qr.ResultList[0]
}
// Result returns the first result or nil.