nethttp/rule/conditional.go
func (c *conditionalRule) Valid(w http.ResponseWriter, r *http.Request) bool {
	if !c.validPredicate() {
		return false
	}
	return true
}
func (c *conditionalRule) Valid(w http.ResponseWriter, r *http.Request) bool {
	if !c.validPredicate() {
		return false
	}
	return true
}
// Valid validator