@Test
 public void testDerivationFromSeedBytes() {
   assertEquals(
       "0330E7FC9D56BB25D6893BA3F317AE5BCF33B3291BD63DB32654A313222F7FD020", keyPair.pubHex());
   assertEquals(
       "1ACAAEDECE405B2A958212629E16F2EB46B153EEE94CDD350FDEFF52795525B7", keyPair.privHex());
 }
 @Test
 public void testDerivationFromString() {
   IKeyPair keyPairFromSeed = AccountID.keyPairFromSeedString(TestFixtures.master_seed);
   assertEquals(
       "0330E7FC9D56BB25D6893BA3F317AE5BCF33B3291BD63DB32654A313222F7FD020",
       keyPairFromSeed.pubHex());
   assertEquals(
       "1ACAAEDECE405B2A958212629E16F2EB46B153EEE94CDD350FDEFF52795525B7",
       keyPairFromSeed.privHex());
 }
 @Test
 public void sanityTestSignAndVerify() {
   assertTrue(
       keyPair.verify(
           TestFixtures.master_seed_bytes, keyPair.sign(TestFixtures.master_seed_bytes)));
 }
 @Test
 public void testVerify() {
   assertTrue(
       keyPair.verify(
           TestFixtures.master_seed_bytes, Hex.decode(TestFixtures.singed_master_seed_bytes)));
 }