assertNotNull(actionClass2);
        assertEquals(TestAction.class, actionClass2);
        assertTrue(RootAction.class.isAssignableFrom(actionClass2));
    }

    @Test
    public void test_genericTypeSafety_multipleDifferentSubclasses() {
        // Test that different instances can hold different subclass types
        UserRoleLoginException exception1 = new UserRoleLoginException(RootAction.class);