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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 _get_cache_key(self, args, kwargs):
 """ Returns key to be used in cache """

        hash_input = json.dumps({'name': self.name, 'args': args, 'kwargs': kwargs}, sort_keys=True)
        # md5 is used for internal caching, not need to care about security
        return hashlib.md5(hash_input).hexdigest()