@Test
  public void testKeyManagerRegistered() throws Exception {
    assertThat(
            KeyManagerRegistry.globalInstance()
                .getKeyManager(
                    "type.googleapis.com/google.crypto.tink.RsaSsaPssPrivateKey",
                    PublicKeySign.class))
        .isNotNull();
  }
Tests that the verifier can verify a newly generated signature for the message and key in the
test vector.
java_src/src/test/java/com/google/crypto/tink/signature/RsaSsaPssSignKeyManagerTest.java