code: function registerActionPath(verb, url, actionName) {
      var app = this[server];
      var reqHandler = handleIncomingRequest.bind(this, actionName, url);
      app[verb](url, reqHandler);
      // We have to insert the action handler right before the notfound handler.
      let requestLayer = app._router.stack.pop(); // last one added
      let wasInserted = false;
      for (let i = 0; i < app._router.stack.length; i++) {
        if (app._router.stack[i].name === 'bound handleRequestNotFound') {
          app._router.stack.splice(i, 0, requestLayer);
          wasInserted = true;
          break;
        }
      }
      if (!wasInserted) {
        app._router.stack.push(requestLayer);
      }
    }
docs: /*
  Binds the given handler to the path.