@Public
  @Deprecated
  public static String toString(ApplicationId appId) {
    return appId.toString();
  }
@Test
  void testContainerId() throws URISyntaxException {
    ContainerId id = TestContainerId.newContainerId(0, 0, 0, 0);
    String cid = id.toString();
    assertEquals("container_0_0000_00_000000", cid);
    ContainerId gen = ContainerId.fromString(cid);
    assertEquals(gen, id);
  }