<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def persist_block(self, block: 'BaseBlock' """ Persist the given block's header and uncles. Assumes all block transactions have been persisted already. """

        with self.db.atomic_batch() as db:
            return self._persist_block(db, block)