code: function (message, completeCallback, title, buttonLabel) {
          var _message = (typeof message === 'string' ? message : JSON.stringify(message));
          var _title = (typeof title === 'string' ? title : 'Alert');
          var _buttonLabel = (buttonLabel && typeof buttonLabel === 'string' ? buttonLabel : 'OK');
          exec(completeCallback, null, 'Notification', 'alert', [_message, _title, _buttonLabel]);
      }
docs: Open a native alert dialog, with a customizable title and button text.
  
  @param {String} message              Message to print in the body of the alert
  @param {Function} completeCallback   The callback that is called when user clicks on a button.
  @param {String} title                Title of the alert dialog (default: Alert)
  @param {String} buttonLabel          Label of the close button (default: OK)