protected int readErrorResponse ( byte[] buffer, int bufferIndex ) throws SMBProtocolDecodingException {
        int start = bufferIndex;
        int structureSize = SMBUtil.readInt2(buffer, bufferIndex);
        if ( structureSize != 9 ) {
            throw new SMBProtocolDecodingException("Error structureSize should be 9");
        }
        this.errorContextCount = buffer[ bufferIndex + 2 ];
        bufferIndex += 4;

    @Override
    protected int readBytesWireFormat ( byte[] buffer, int bufferIndex ) throws SMBProtocolDecodingException {
        int start = bufferIndex;

        int structureSize = SMBUtil.readInt2(buffer, bufferIndex);
        if ( structureSize != 65 ) {
            throw new SMBProtocolDecodingException("Structure size is not 65");
        }

        this.securityMode = SMBUtil.readInt2(buffer, bufferIndex + 2);