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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 clear() -> None: """ Clear all archivable caches in memory. """


        LOGGER.debug('clear >>>')

        with SCHEMA_CACHE.lock:
            SCHEMA_CACHE.clear()
        with CRED_DEF_CACHE.lock:
            CRED_DEF_CACHE.clear()
        with REVO_CACHE.lock:
            REVO_CACHE.clear()

        LOGGER.debug('clear <<<')