anchor.diff:     * Matches the [url] against the [Route] pattern and returns [Map] of matched
      * parameters or [null] if the Route does not match.
      */
  -  ObservableMap match(String url) {
  +  Map match(String url) {
       var match = this._matchExp.firstMatch(url);
   
       // If the [url] does not match, returns [null].
  
positive.code: // code is governed by a BSD-style license that can be found in the LICENSE
  // file.
  
  library vacuum.router;
  import "dart:core";
  import "dart:uri";
  import "dart:html";
  import 'package:web_ui/web_ui.dart';
  import 'package:delegate/delegate.dart';
  
  
  /**
   * Maps [Map] of variables to [String] Url component and vice versa.
  
negative.code:     (e) => navigator.navigate(window.location.pathname, true)
    );
  
    //Initialize routing with current url.
    //navigator.navigate(window.location.pathname);
    return navigator;
  }
  