* most [BufferedSource] instances, but not of [Buffer].
   */
  private fun responseBody(content: String): ResponseBody {
    val data = Buffer().writeUtf8(content)
    val source: Source =
      object : Source {
        var closed = false

        override fun close() {
          closed = true
        }

        override fun read(
          sink: Buffer,
          byteCount: Long,
        ): Long {

        SMBUtil.writeInt4(-1000, buffer, bufferIndex + 11);
        SMBUtil.writeInt4(0, buffer, bufferIndex + 15);
        SMBUtil.writeInt4(0, buffer, bufferIndex + 19);
        SMBUtil.writeInt4(-5000, buffer, bufferIndex + 23);
        SMBUtil.writeInt4(0, buffer, bufferIndex + 27);
        SMBUtil.writeInt4(0, buffer, bufferIndex + 31);
        buffer[bufferIndex + 35] = (byte) 0x80; // 128 as unsigned

	v := allTierStats{}
	var buf bytes.Buffer
	msgp.Encode(&buf, &v)
	b.SetBytes(int64(buf.Len()))
	en := msgp.NewWriter(msgp.Nowhere)
	b.ReportAllocs()
	b.ResetTimer()
	for i := 0; i < b.N; i++ {
		v.EncodeMsg(en)
	}
	en.Flush()
}

func BenchmarkDecodeallTierStats(b *testing.B) {
	v := allTierStats{}
	var buf bytes.Buffer
	msgp.Encode(&buf, &v)
	b.SetBytes(int64(buf.Len()))

    }

    @Override
    protected int readSetupWireFormat(final byte[] buffer, final int bufferIndex, final int len) {
        return 0;
    }

    @Override
    protected int readParametersWireFormat(final byte[] buffer, final int bufferIndex, final int len) {
        return 0;
    }

    @Override
    protected int readDataWireFormat(final byte[] buffer, int bufferIndex, final int len) {
        final int start = bufferIndex;

	v := BatchJobReplicateCredentials{}
	var buf bytes.Buffer
	msgp.Encode(&buf, &v)
	b.SetBytes(int64(buf.Len()))
	en := msgp.NewWriter(msgp.Nowhere)
	b.ReportAllocs()
	b.ResetTimer()
	for i := 0; i < b.N; i++ {
		v.EncodeMsg(en)
	}
	en.Flush()
}

func BenchmarkDecodeBatchJobReplicateCredentials(b *testing.B) {
	v := BatchJobReplicateCredentials{}
	var buf bytes.Buffer
	msgp.Encode(&buf, &v)

	fill int
}

// reset scratch buffer
func (s *scratch) reset() { s.fill = 0 }

// bytes returns the written contents of scratch buffer
func (s *scratch) bytes() []byte { return s.data[0:s.fill] }

// grow scratch buffer
func (s *scratch) grow() {
	ndata := make([]byte, cap(s.data)*2)
	copy(ndata, s.data)
	s.data = ndata
}

// append single byte to scratch buffer
func (s *scratch) add(c byte) {

        // Group SID at offset 40
        buffer.position(40);
        buffer.put((byte) 0x01); // Revision
        buffer.put((byte) 0x01); // SubAuthorityCount
        buffer.put(new byte[] { 0, 0, 0, 0, 0, 2 }); // IdentifierAuthority
        buffer.putInt(0); // SubAuthority

        // DACL at offset 60
        buffer.position(60);
        buffer.put((byte) 0x02); // AclRevision

  }
  return commaFound
}

private fun Buffer.startsWith(prefix: Byte): Boolean = !exhausted() && this[0] == prefix

/**
 * Reads a double-quoted string, unescaping quoted pairs like `\"` to the 2nd character in each
 * sequence. Returns the unescaped string, or null if the buffer isn't prefixed with a
 * double-quoted string.
 */
@Throws(EOFException::class)
private fun Buffer.readQuotedString(): String? {

    /**
     * Create new TCP memory region
     *
     * @param buffer memory buffer
     * @param access access permissions (ignored for TCP)
     */
    public TcpMemoryRegion(ByteBuffer buffer, EnumSet<RdmaAccess> access) {
        super(buffer, access);
    }

    @Override
    public void invalidate() {
        // No real invalidation needed for TCP

        byte[] buffer = new byte[6];
        close.writeParameterWordsWireFormat(buffer, 0);
        // first two bytes encode fid 42
        assertEquals((byte) 42, buffer[0]);
        assertEquals((byte) 0, buffer[1]);
        // remaining 4 bytes should all be 0xFF according to writeUTime
        for (int i = 2; i < 6; i++) {
            assertEquals((byte) 0xFF, buffer[i], "byte %d should be 0xFF".formatted(i));