buf.setIndex(0);
        // Decode will throw exception as ptype 0 is not a valid response type
        assertThrows(NdrException.class, () -> m.decode(buf));
    }

    @Test
    void testRoundTripEncodeDecodeForResponseType() throws Exception {
        // Create a properly formatted response message
        NdrBuffer buf = new NdrBuffer(new byte[1024], 0);

        // Manually encode a response header