code: function(path/*, callback*/) {
      this.lazyRouter();
      var route = this.router.route(path);
      route.all.apply(route, [].slice.call(arguments, 1));
      return this;
    }
docs: Special-cased "all" method, applying the given route `path`,
  middleware, and callback.
  
  @name .all
  @param {String} `path`
  @param {Function} `callback`
  @return {Object} `this` for chaining