@Test
  public void test_fipsModuleNotAvailable_fails() throws Exception {
    Assume.assumeFalse(TinkFipsUtil.fipsModuleAvailable());
    Registry.reset();
    assertThrows(GeneralSecurityException.class, Registry::restrictToFipsIfEmpty);
  }
Returns the type URL that identifies the key type of keys managed by this KeyManager.
java_src/src/test/java/com/google/crypto/tink/RegistryTest.java