@Test
public void testCreate() {

  final KeyStore keyStore = new InMemoryKeyStore();
  final WalletApiFactory walletApiFactory = new WalletApiFactory();
  assertNotNull(walletApiFactory.create(keyStore));
  assertNotNull(walletApiFactory.create(keyStore, 3, 100L));
  assertNotNull(walletApiFactory.create(keyStore, TryCountAndInterval.of(3, Time.of(100L))));
}