code: function(fragment) {
        // If the root doesn't match, no routes can match either.
        if (!this.matchRoot()) return false;
        fragment = this.fragment = this.getFragment(fragment);
        return _.some(this.handlers, function(handler) {
          if (handler.route.test(fragment)) {
            handler.callback(fragment);
            return true;
          }
        });
      }
docs: Attempt to load the current URL fragment. If a route succeeds with a match, returns `true`. If no defined routes matches the fragment, returns `false`.