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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_option_collection_hash(self):
 """ Gets option collection hash, a mapping of hash values to build properties Returns a dictionary with the following structure: { } """

        resp = self._get_json(self.OPTION_COLLECTION_HASH_ENDPOINT)
        ret = {}
        for result in resp:
            ret[result['option_collection_hash']] = result['options']

        return ret