assertEquals(Integer.valueOf(42), intOpt.get());
        assertEquals(Boolean.TRUE, boolOpt.get());
        assertNotNull(dateOpt.get());
    }

    public void test_ofNullable_chainedOperations() {
        // Test chaining operations on the returned OptionalEntity
        String testValue = "HELLO WORLD";
        OptionalEntity<String> result = OptionalUtil.ofNullable(testValue);