OptionalEntity<Integer> opt = OptionalUtil.ofNullable((Integer) null);
            assertFalse(opt.isPresent());
        }
    }

    @Test
    public void test_ofNullable_edgeCaseValues() {
        // Test with special numeric values
        OptionalEntity<Double> nanOpt = OptionalUtil.ofNullable(Double.NaN);
        assertTrue(nanOpt.isPresent());
        assertTrue(Double.isNaN(nanOpt.get()));