void decode_header(final NdrBuffer buf) throws NdrException {
        /* RPC major / minor version */
        if (buf.dec_ndr_small() != 5 || buf.dec_ndr_small() != 0) {
            throw new NdrException("DCERPC version not supported");
        }
        this.ptype = buf.dec_ndr_small();
        this.flags = buf.dec_ndr_small();
        if (buf.dec_ndr_long() != 0x00000010) { /* Little-endian / ASCII / IEEE */

            _dst.enc_ndr_small(clock_seq_hi_and_reserved);
            _dst.enc_ndr_small(clock_seq_low);
            final int _nodes = 6;
            final int _nodei = _dst.index;
            _dst.advance(1 * _nodes);

            _dst = _dst.derive(_nodei);
            for (int _i = 0; _i < _nodes; _i++) {
                _dst.enc_ndr_small(node[_i]);
            }
        }

            _dst.enc_ndr_small(this.clock_seq_hi_and_reserved);
            _dst.enc_ndr_small(this.clock_seq_low);
            final int _nodes = 6;
            final int _nodei = _dst.index;
            _dst.advance(1 * _nodes);

            _dst = _dst.derive(_nodei);
            for (int _i = 0; _i < _nodes; _i++) {
                _dst.enc_ndr_small(this.node[_i]);
            }
        }

        buf.setIndex(0);

        // Verify header was written correctly
        assertEquals(5, buf.dec_ndr_small()); // RPC version
        assertEquals(0, buf.dec_ndr_small()); // minor version
        assertEquals(0, buf.dec_ndr_small()); // ptype
        assertEquals(0x05, buf.dec_ndr_small()); // flags
        assertEquals(0x00000010, buf.dec_ndr_long()); // data representation

        // Verify that enc_ndr_small was called with the correct value
        verify(mockNdrBuffer, times(1)).enc_ndr_small(100);
        verifyNoMoreInteractions(mockNdrBuffer);
    }

    @Test
    void testDecode() throws NdrException {
        // Define the value that dec_ndr_small should return
        int decodedValue = 200;
        when(mockNdrBuffer.dec_ndr_small()).thenReturn(decodedValue);

            verify(mockNdrBuffer).enc_ndr_small((byte) 0x11);
            verify(mockNdrBuffer).enc_ndr_small((byte) 0x22);
            verify(mockNdrBuffer).advance(6);
            verify(mockNdrBuffer).derive(anyInt());
            // Verify each node byte is encoded
            verify(mockNdrBuffer).enc_ndr_small((byte) 0xAA);
            verify(mockNdrBuffer).enc_ndr_small((byte) 0xBB);

            lenient().doNothing().when(mockBuffer).enc_ndr_small(anyInt());
            lenient().doNothing().when(mockBuffer).enc_ndr_long(anyInt());
            lenient().doNothing().when(mockBuffer).enc_ndr_short(anyInt());

            message.encode_header(mockBuffer);

            // Verify that key values were written
            verify(mockBuffer).enc_ndr_small(5); // RPC version

    void decode_header(final NdrBuffer buf) throws NdrException {
        /* RPC major / minor version */
        if (buf.dec_ndr_small() != 5 || buf.dec_ndr_small() != 0) {
            throw new NdrException("DCERPC version not supported");
        }
        ptype = buf.dec_ndr_small();
        flags = buf.dec_ndr_small();
        if (buf.dec_ndr_long() != 0x00000010) { /* Little-endian / ASCII / IEEE */

            int result = 0;
            when(mockBuffer.dec_ndr_short()).thenReturn(4096, 4096, 10, result, 0);
            when(mockBuffer.dec_ndr_long()).thenReturn(12345);
            when(mockBuffer.dec_ndr_small()).thenReturn(1);
            lenient().doNothing().when(mockBuffer).advance(anyInt());
            lenient().when(mockBuffer.align(anyInt())).thenReturn(0);

            // When

            this.impersonation_level = (short) _src.dec_ndr_short();
            this.context_mode = (byte) _src.dec_ndr_small();
            this.effective_only = (byte) _src.dec_ndr_small();

        }
    }

    /**
     * LSA object attributes.
     */
    /**
     * LSA object attributes for policy and resource access.
     */
    public static class LsarObjectAttributes extends NdrObject {

        /**