code: func InstallHandlers(r *router.Router, base router.MiddlewareChain) {
  	r.POST(handlerPattern, base.Extend(gaemiddleware.RequireTaskQueue("")), TaskQueueHandler)
  	r.POST("/_ah/push-handlers/"+notifyTopicSuffix, base, PubsubReceiver)
  }
docs: // InstallHandlers installs the taskqueue callback handler.
  //
  // The `base` middleware must have a registry installed with WithRegistry.