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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 ensure_cache_id(self, cache_id_obj):
 """Ensure the integrity of the cache id object."""

        cache_id = self._get_canonical_id(cache_id_obj)
        if cache_id != self._cache_id_obj:
            raise ValueError(
                "cache mismatch {0} != {1}".format(
                    cache_id, self._cache_id_obj))