// Write context header
        writeInt4(buffer, offset, getName().length());  // NameOffset
        writeInt4(buffer, offset + 4, getName().length());  // NameLength
        writeInt4(buffer, offset + 8, 16);  // Reserved
        
        int dataOffset = offset + 16 + getName().length();
        dataOffset = (dataOffset + 7) & ~7;  // 8-byte alignment
        

        final int start = dstIndex;

        SMBUtil.writeInt2(25, dst, dstIndex);

        dst[dstIndex + 2] = (byte) (this.sessionBinding ? 0x1 : 0);
        dst[dstIndex + 3] = (byte) this.securityMode;
        dstIndex += 4;

        SMBUtil.writeInt4(this.capabilities, dst, dstIndex);
        dstIndex += 4;
        SMBUtil.writeInt4(0, dst, dstIndex); // Channel
        dstIndex += 4;

        final int start = dstIndex;
        SMBUtil.writeInt2(36, dst, dstIndex);
        SMBUtil.writeInt2(this.dialects.length, dst, dstIndex + 2);
        dstIndex += 4;

        SMBUtil.writeInt2(this.securityMode, dst, dstIndex);
        SMBUtil.writeInt2(0, dst, dstIndex + 2); // Reserved
        dstIndex += 4;

        SMBUtil.writeInt4(this.capabilities, dst, dstIndex);
        dstIndex += 4;

        int nameLen = getName().length();
        writeInt4(buffer, offset, 16);  // Next
        writeInt2(buffer, offset + 4, nameLen);  // NameOffset
        writeInt2(buffer, offset + 6, nameLen);  // NameLength
        writeInt2(buffer, offset + 8, 0);  // Reserved
        writeInt2(buffer, offset + 10, STRUCTURE_SIZE);  // DataOffset
        writeInt4(buffer, offset + 12, STRUCTURE_SIZE);  // DataLength
        

     * @param val the value to write
     * @param dst the destination byte array
     * @param dstIndex the starting index in the destination array
     */
    public static void writeInt2(final long val, final byte[] dst, int dstIndex) {
        dst[dstIndex] = (byte) val;
        dstIndex++;
        dst[dstIndex] = (byte) (val >> 8);
    }

    /**

        SMBUtil.writeInt2(this.creditCharge, dst, dstIndex + 6);
        SMBUtil.writeInt2(this.command, dst, dstIndex + 12);
        SMBUtil.writeInt2(this.credit, dst, dstIndex + 14);
        SMBUtil.writeInt4(this.flags, dst, dstIndex + 16);
        SMBUtil.writeInt4(this.nextCommand, dst, dstIndex + 20);
        SMBUtil.writeInt8(this.mid, dst, dstIndex + 24);

        if (this.async) {

            byte[] buffer = new byte[64];
            SMBUtil.writeInt2(17, buffer, 0); // Structure size
            SMBUtil.writeInt2(0, buffer, 2); // Reserved
            SMBUtil.writeInt4(4096, buffer, 4); // Count
            SMBUtil.writeInt4(2048, buffer, 8); // Remaining
            SMBUtil.writeInt2(100, buffer, 12); // WriteChannelInfoOffset (ignored)
            SMBUtil.writeInt2(200, buffer, 14); // WriteChannelInfoLength (ignored)

    }

    @Override
    protected ConcurrentMap<K, V> delegate() {
      return delegate;
    }

    void writeMapTo(ObjectOutputStream out) throws IOException {
      out.writeInt(delegate.size());
      for (Entry<K, V> entry : delegate.entrySet()) {
        out.writeObject(entry.getKey());
        out.writeObject(entry.getValue());
      }
      out.writeObject(null); // terminate entries

        boolean expectedDirectory = false;

        // Encode test data
        int offset = 0;
        SMBUtil.writeInt8(expectedAllocationSize, buffer, offset);
        offset += 8;
        SMBUtil.writeInt8(expectedEndOfFile, buffer, offset);
        offset += 8;
        SMBUtil.writeInt4(expectedNumberOfLinks, buffer, offset);
        offset += 4;
        buffer[offset++] = (byte) (expectedDeletePending ? 1 : 0);

        SMBUtil.writeInt4(this.desiredAccess, dst, dstIndex);
        dstIndex += 4;
        SMBUtil.writeInt4(this.fileAttributes, dst, dstIndex);
        dstIndex += 4;
        SMBUtil.writeInt4(this.shareAccess, dst, dstIndex);
        dstIndex += 4;
        SMBUtil.writeInt4(this.createDisposition, dst, dstIndex);
        dstIndex += 4;
        SMBUtil.writeInt4(this.createOptions, dst, dstIndex);
        dstIndex += 4;