derived.setLength(5);
        assertEquals(5, derived.getLength());
        assertEquals(5, ndrBuffer.getLength()); // Should affect original's deferred length
    }

    @Test
    void testAdvance() {
        ndrBuffer.advance(10);
        assertEquals(10, ndrBuffer.getIndex());
        assertEquals(10, ndrBuffer.getLength());

        ndrBuffer.advance(5);
        assertEquals(15, ndrBuffer.getIndex());