nethttp/rule/chained.go
func (c *chainedRule) Claim(r *http.Request) bool {
	if !c.Rule.Claim(r) {
		return false
	}
	return c.next.Claim(r)
}
func (c *chainedRule) Claim(r *http.Request) bool {
	if !c.Rule.Claim(r) {
		return false
	}
	return c.next.Claim(r)
}
// Claim validator