ReferenceQueue<Object> queue,
        PhantomReference<Object> frqRef)
        throws Throwable;
  }

  private static final class ReflectiveStarter implements FinalizerStarter {
    final Method startFinalizer;

    ReflectiveStarter(Method startFinalizer) {
      this.startFinalizer = startFinalizer;
    }

    @Override
    public void startFinalizer(

        ReferenceQueue<Object> queue,
        PhantomReference<Object> frqRef)
        throws Throwable;
  }

  private static final class ReflectiveStarter implements FinalizerStarter {
    final Method startFinalizer;

    ReflectiveStarter(Method startFinalizer) {
      this.startFinalizer = startFinalizer;
    }

    @Override
    public void startFinalizer(