docs: def _marshal_settings(self):
          """Marshal Django settings into a serializable object.
  
          :return: The serialized settings.
          :rtype: dict
          """
          result = {}
          for key in dir(settings):
              if any(map(key.startswith, ['FLOW_', 'RESOLWE_', 'CELERY_'])):
                  result[key] = getattr(settings, key)
          return result