System.setSecurityManager(disallowPropertySecurityManager);

    settableFutureClass = classReloader.loadClass(SettableFuture.class.getName());

    /*
     * We must keep the SecurityManager installed during the test body: It affects what kind of
     * threads ForkJoinPool.commonPool() creates.
     */
  }

  @Override
  protected void tearDown() throws Exception {
    System.setSecurityManager(oldSecurityManager);