nestedList.add(Arrays.asList("test"));
        nestedList.add(Arrays.asList("test"));
        assertEquals(120L, MemoryUtil.sizeOf(nestedList));
    }

    public void test_sizeOf_mapVariations() {
        // Empty map
        assertEquals(0L, MemoryUtil.sizeOf(new HashMap<>()));

        // Map with null keys and values
        Map<String, String> mapWithNulls = new HashMap<>();