in serve.go [150:161]
func (s *Server) HandleCx(pattern string, handler HandlerFunc) {
pathParts := strings.Split(pattern, "/")
if len(pathParts) >= 2 {
pathPrefix := pathParts[1]
_, ok := reservedPaths[pathPrefix]
if ok {
s.lg.Fatal("admin, health are reserved path prefixes")
}
}
s.mux.Handle(pattern, handler)
}