code: function (cb) {
      if ( cb === void 0 ) cb = function () {};
  
      if (!b$.App.getSerialNumber()) { return }
  
      var info = {
        machine: b$.App.getSerialNumber(),
        os: b$.App.getAppRunOnOS(),
        appId: b$.App.getAppId(),
        appName: b$.App.getAppName(),
        appVersion: b$.App.getAppVersion()
      };
      communication.commitMessage('/services/machine_certificate_fetch', info, cb);
    }
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