public static boolean useCrossRepositoryBlobMounts() {
    return System.getProperty(CROSS_REPOSITORY_BLOB_MOUNTS) == null
        || Boolean.getBoolean(CROSS_REPOSITORY_BLOB_MOUNTS);
  }
@Test
  public void testUseBlobMounts_false() {
    System.setProperty(JibSystemProperties.CROSS_REPOSITORY_BLOB_MOUNTS, "false");
    Assert.assertFalse(JibSystemProperties.useCrossRepositoryBlobMounts());
  }