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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 evict(self):
 """Evict all caches related to these operations."""

        logging.debug('Evicting cache for %r', self.cache_key)
        _clear_version_cache(self.cache_key)
        # Cause the cache key to be refreshed next time any operation is
        # run to make sure we don't act on old cached data.
        self.versioned_cache_key = None