if host != "" {
		root.findChild(host).matchingMethodsPath(path, methodSet)
	}
	root.emptyChild.matchingMethodsPath(path, methodSet)
	if methodSet["GET"] {
		methodSet["HEAD"] = true
	}
}

func (n *routingNode) matchingMethodsPath(path string, set map[string]bool) {
	if n == nil {
		return
	}