def persist_if_cached(self, record):
        cache_key = self._get_cache_key(record)
        if cache_key in self.ephemeral:
            self.persist(record)
L{DocBuilder.build} can be instructed to delete the input files after
dataset/ETHPy150Open lektor/lektor/lektor/db.py/RecordCache.persist_if_cached--crossover with--dataset/ETHPy150Open kuri65536/python-for-android/python-modules/twisted/twisted/python/test/test_release.py/DocBuilderTestCase.test_deleteInput