trace.go
func SetAuthRequest(f func(req *http.Request) (any, sensitive bool)) {
	xtr.AuthRequest = f
}
func SetAuthRequest(f func(req *http.Request) (any, sensitive bool)) {
	xtr.AuthRequest = f
}
// SetAuthRequest sets the AuthRequest function for the underlying trace HTTP listener, which
// determines whether a specific request is permitted to load the
// /debug/requests or /debug/events pages.