docs: def NotificationsGet(self, notification_id = -1):
          """
              Obtain either all notifications from CommonSense, or the details of a specific notification.
              If successful, the result can be obtained from getResponse(), and should be a json string.
              
              @param notification_id (int) (optional) - Notification id of the notification to obtain details from.
              
              @return (bool) - Boolean indicating whether NotificationsGet was successful.
          """
          if notification_id == -1:
              url = '/notifications.json'
          else:
              url = '/notifications/{0}.json'.format(notification_id)
  
          if self.__SenseApiCall__(url, 'GET'):
              return True
          else:
              self.__error__ = "api call unsuccessful"
              return False