def METHOD_NAME(self):
    self.wallet = MiniWallet(self.nodes[0])
    self.log.info('Test default mempool expiry timeout of %d hours.' %
                  DEFAULT_MEMPOOL_EXPIRY_HOURS)
    self.test_transaction_expiry(DEFAULT_MEMPOOL_EXPIRY_HOURS)
    self.log.info('Test custom mempool expiry timeout of %d hours.' %
                  CUSTOM_MEMPOOL_EXPIRY)
    self.restart_node(0, ['-mempoolexpiry=%d' % CUSTOM_MEMPOOL_EXPIRY])
    self.test_transaction_expiry(CUSTOM_MEMPOOL_EXPIRY)