private static @NotNull Class<? extends Runnable> findProcessingClass() {
    try {
      return Class.forName(
        "javax.swing.RepaintManager$ProcessingRunnable",
        false,
        InvocationUtil.class.getClassLoader()
      ).asSubclass(Runnable.class);
    }
    catch (ClassNotFoundException e) {
      throw new InternalAPIChangedException(RepaintManager.class, e);
    }
  }
private static @NotNull Class<? extends Runnable> findProcessingClass()