uri.go
func (u *URI) Path() []byte {
	path := u.path
	if len(path) == 0 {
		path = strSlash
	}
	return path
}
func (u *URI) Path() []byte {
	path := u.path
	if len(path) == 0 {
		path = strSlash
	}
	return path
}
// Path returns URI path, i.e. /foo/bar of http://aaa.com/foo/bar?baz=123#qwe .
//
// The returned path is always urldecoded and normalized,
// i.e. '//f%20obar/baz/../zzz' becomes '/f obar/zzz'.
//
// The returned value is valid until the next URI method call.