WeakReference<ClassLoader> loaderRef = useFrqInSeparateLoader();
    GcFinalization.awaitClear(loaderRef);
  }

  /**
   * Tests that the use of a {@link FinalizableReferenceQueue} does not subsequently prevent the
   * loader of that class from being garbage-collected.
   */
  public void testUnloadableWithoutSecurityManager() throws Exception {
    if (isJdk9OrHigher()) {
      return;
    }

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