* signing verification failure.
                 */
                if (this.getCommand() == SMB_COM_NT_CREATE_ANDX && ((SmbComNTCreateAndXResponse) this).isExtended()
                        && ((SmbComNTCreateAndXResponse) this).getFileType() != 1) {
                    this.wordCount += 8;
                }
            }

            bufferIndex = start + 1 + this.wordCount * 2;

    }

    @Test
    @DisplayName("NT_CREATE_ANDX extended response adjusts wordCount by +8")
    void testNtCreateAndxExtendedAdjustsWordCount() {
        SmbComNTCreateAndXResponse resp = new SmbComNTCreateAndXResponse() {
            @Override
            int readHeaderWireFormat(byte[] buffer, int bufferIndex) {
                return 33;
            }
        };

        public int getHeaderStart() {
            return headerStart;
        }
    }

    /**
     * Test implementation of SmbComNTCreateAndXResponse for testing
     */
    private static class TestSmbComNTCreateAndXResponse extends SmbComNTCreateAndXResponse {

        private boolean extended = false;
        private int fileType = 0;

                 * the correct number of bytes for signing purposes. Otherwise we get a
                 * signing verification failure.
                 */
                if (command == SMB_COM_NT_CREATE_ANDX && ((SmbComNTCreateAndXResponse) this).isExtended) {
                    wordCount += 8;
                }
            }

            bufferIndex = start + 1 + wordCount * 2;
        }