if ( cc != null ) {
                    cc.decode(buffer, createContextStart + dataOffset, dataLength);
                    contexts.add(cc);
                }

                cci = Math.max(cci, createContextStart + dataOffset + dataLength);

                if ( next > 0 ) {
                    createContextStart += next;
                }

    /**
     * 
     */
    public static final int OVERHEAD = Smb2Constants.SMB2_HEADER_LENGTH + 48;

    private byte[] data;
    private int dataOffset;
    private int dataLength;

    private byte[] fileId;
    private long offset;
    private int channel;
    private int remainingBytes;
    private int writeFlags;


    /**
     * @param config

        this.parameterDisplacement = SMBUtil.readInt4(buffer, bufferIndex);
        bufferIndex += 4;
        setDataCount(SMBUtil.readInt4(buffer, bufferIndex));
        bufferIndex += 4;
        this.dataOffset = SMBUtil.readInt4(buffer, bufferIndex);
        bufferIndex += 4;
        this.dataDisplacement = SMBUtil.readInt4(buffer, bufferIndex);
        bufferIndex += 4;
        this.setupCount = buffer[ bufferIndex ] & 0xFF;

        }

        short dataOffset = buffer[ bufferIndex + 2 ];
        bufferIndex += 4;
        this.dataLength = SMBUtil.readInt4(buffer, bufferIndex);
        bufferIndex += 4;
        this.dataRemaining = SMBUtil.readInt4(buffer, bufferIndex);
        bufferIndex += 4;
        bufferIndex += 4; // Reserved2

        int dataStart = getHeaderStart() + dataOffset;

            writeInt4( parameterDisplacement, dst, dstIndex );
            dstIndex += 4;
        }
        writeInt4( dataCount, dst, dstIndex );
        dstIndex += 4;
        writeInt4(( dataCount == 0 ? 0 : dataOffset ), dst, dstIndex );
        dstIndex += 4;
        if (command == SMB_COM_NT_TRANSACT_SECONDARY) {
            writeInt4( dataDisplacement, dst, dstIndex );
            dstIndex += 4;

            dstIndex += 4;
        }
        SMBUtil.writeInt4(this.dataCount, dst, dstIndex);
        dstIndex += 4;
        SMBUtil.writeInt4( ( this.dataCount == 0 ? 0 : this.dataOffset ), dst, dstIndex);
        dstIndex += 4;
        if ( this.getCommand() == SMB_COM_NT_TRANSACT_SECONDARY ) {
            SMBUtil.writeInt4(this.dataDisplacement, dst, dstIndex);
            dstIndex += 4;

                int off = HEADER_LENGTH;
                                    /* WordCount thru dataOffset always 27 */
                readn( in, BUF, 4 + off, 27 ); off += 27;
                resp.decode( BUF, 4 );
                                              /* EMC can send pad w/o data */
                int pad = r.dataOffset - off;
                if (r.byteCount > 0 && pad > 0 && pad < 4)

	}

	// Update size...
	binary.BigEndian.PutUint32(dst[dataOffset-4:dataOffset], uint32(len(dst)-dataOffset))

	// Add CRC of metadata as fixed size (5 bytes)
	// Prior to v1.3 this was variable sized.
	tmp = tmp[:5]
	tmp[0] = 0xce // muint32
	binary.BigEndian.PutUint32(tmp[1:], uint32(xxhash.Sum64(dst[dataOffset:])))
	dst = append(dst, tmp[:5]...)
	return append(dst, x.data...), nil
}

func (rc *ReadCloser) Close() error {
	return rc.f.Close()
}

// DataOffset returns the offset of the file's possibly-compressed
// data, relative to the beginning of the zip file.
//
// Most callers should instead use [File.Open], which transparently
// decompresses data and verifies checksums.
func (f *File) DataOffset() (offset int64, err error) {
	bodyOffset, err := f.findBodyOffset()
	if err != nil {

	// Check that OpenRaw returns the correct byte segment
	rw, err := f.OpenRaw()
	if err != nil {
		t.Errorf("%v: OpenRaw error=%v", f.Name, err)
		return
	}
	start, err := f.DataOffset()
	if err != nil {
		t.Errorf("%v: DataOffset error=%v", f.Name, err)
		return
	}
	got, err := io.ReadAll(rw)
	if err != nil {
		t.Errorf("%v: OpenRaw ReadAll error=%v", f.Name, err)
		return
	}