### Question:
ExtendedPrivKey { public AccountAddress getAddress() { return AccountAddress.fromAuthenticationKey(AuthenticationKey.fromPublicKey(publicKey)); } ExtendedPrivKey(SecretKey secretKey); AccountAddress getAddress(); final PrivateKey privateKey; final PublicKey publicKey; }### Answer:
@Test public void getAddress() { assertEquals( "5551702ff5dbf7485255e0816708b8a2", childPrivate0.getAddress().toString()); }