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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 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