anchor.diff:      if (isMaster(ctx)) {
         _removeSessionToken(ctx)
         .then((_) {
  -        ctx.sendJson(buildResponse({}));
  +        ctx.sendJson(buildResponse('handleLogout', {}));
           ctx.end();
         })
         .catchError((e, trace) {
  
positive.code:     return isMaster;
    }
  
    static Map buildResponse(HashMap message, {bool valid: true}) {
      return {
          "valid": valid,
          "message": message
      };
    }
  
    static Future<File> _updateSessionToken(HttpContext ctx) {
  
negative.code:     indexData['categories'] = categoryList;
      indexData['tags'] = tagList;
  
      ctx.sendJson(buildResponse('handleDataInit', indexData, doLog: false));
      ctx.end();
    }
  
    static handleOauth2(HttpContext ctx) {
      if (CartSystem.instance.credentials.length > 0) {
        PinLogger.instance.shout('[CartAction] handleOauth2: Already authorized!');
        ctx.sendJson(buildResponse('handleOauth2', { "message": "Already authorized!" }, valid: false));
      } else {
        ctx.sendJson(buildResponse('handleOauth2', {
          "url": CartSystem.instance.oauth2.getOAuthUrl()
        }));
      }
  