func (u *URI) SetQueryString(queryString string) {
	u.queryString = append(u.queryString[:0], queryString...)
	u.parsedQueryArgs = false
}
func (u *URI) SetQueryString(queryString string) {
	u.queryString = append(u.queryString[:0], queryString...)
	u.parsedQueryArgs = false
}
// SetQueryString sets URI query string.