anchor.diff:   * The response for an HTTP request.  Returned from the [Http] service.
    */
   class HttpResponse {
  -/**
  -  * The HTTP status code.
  -*/
  +  /**
  +   * The HTTP status code.
  +   */
     int status;
   
  -/**
  -  * DEPRECATED
  -*/
  +  /**
  +   * DEPRECATED
  +   */
     var responseText;
     Map _headers;
   
  -/**
  -  * The [HttpResponseConfig] object which contains the requested URL
  -*/
  +  /**
  +   * The [HttpResponseConfig] object which contains the requested URL
  +   */
     HttpResponseConfig config;
   
  -/**
  -  * Constructor
  -*/
  +  /**
  +   * Constructor
  +   */
     HttpResponse([this.status, this.responseText, this._headers, this.config]);
   
     /**
  
positive.code:    */
    var cache;
  
    static _defaultTransformRequest(d, _) =>
      d is String || d is dom.File ? d : json.stringify(d);
  
  
    static var _JSON_START = new RegExp(r'^\s*(\[|\{[^\{])');
    static var _JSON_END = new RegExp(r'[\}\]]\s*$');
    static var _PROTECTION_PREFIX = new RegExp('^\\)\\]\\}\',?\\n');
    static _defaultTransformResponse(d, _) {
      if (d is String) {
        d = d.replaceFirst(_PROTECTION_PREFIX, '');
        if (d.contains(_JSON_START) && d.contains(_JSON_END)) {
          d = json.parse(d);
        }
      }
      return d;
    }
  
    /**
     * Constructor intended for DI.
     */
    HttpDefaults(HttpDefaultHeaders this.headers) {
      transformRequest = [_defaultTransformRequest];
      transformResponse = [_defaultTransformResponse];
    }
  }
  
  /**
  
negative.code: * Injected into the [Http] service.  This class contains application-wide
  * HTTP defaults.
  *
  * The default implementation provides headers which the
  * Angular team believes to be useful.
  */
  class HttpDefaults {
  