*/
    public void enc_ndr_small(final int s) {
        buf[index] = (byte) (s & 0xFF);
        advance(1);
    }

    /**
     * Decodes a small integer (1 byte) from NDR format.
     *
     * @return the decoded small integer value
     */
    public int dec_ndr_small() {
        final int val = buf[index] & 0xFF;
        advance(1);
        return val;
    }

    /**

        b[off + 0] = (byte) SessionServicePacket.SESSION_MESSAGE;
        b[off + 1] = (byte) 0x00;
        b[off + 2] = (byte) (len >> 8 & 0xFF);
        b[off + 3] = (byte) (len & 0xFF);

        out.write(b, off, 4 + len);
    }

        assertEquals(0xFFFF, pdis.readUnsignedShort());
    }

    @Test
    public void testReadUnsignedInt() throws IOException {
        // Little-endian 0xFFFFFFFF -> 0xFF 0xFF 0xFF 0xFF
        byte[] data = new byte[] { (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF };
        PacDataInputStream pdis = createInputStream(data);
        assertEquals(0xFFFFFFFFL, pdis.readUnsignedInt());
    }

    @Test

            bufferIndex += 14;
            e.type = readInt2(buffer, bufferIndex);
            bufferIndex += 2;
            int off = readInt4(buffer, bufferIndex);
            bufferIndex += 4;
            off = (off & 0xFFFF) - converter;
            off = start + off;
            e.remark = readString(buffer, off, 128, false);

            if (LogStream.level >= 4) {
                log.println(e);
            }
        }

        assertEquals(30000, SmbConstants.DEFAULT_RESPONSE_TIMEOUT);
        assertEquals(35000, SmbConstants.DEFAULT_SO_TIMEOUT);
        assertEquals(0xFFFF, SmbConstants.DEFAULT_RCV_BUF_SIZE);
        assertEquals(0xFFFF, SmbConstants.DEFAULT_SND_BUF_SIZE);
        assertEquals(1024, SmbConstants.DEFAULT_NOTIFY_BUF_SIZE);
        assertEquals(250, SmbConstants.DEFAULT_SSN_LIMIT);

	SUBS	$0xffff0, R6, RSP                                // ERROR "illegal destination register"
	SUBS	$0x1000100010001000, R6, RSP                     // ERROR "illegal destination register"
	SUBS	$0x10001000100011, R6, RSP                       // ERROR "illegal destination register"
	SUBSW	$0xff, R6, RSP                                   // ERROR "illegal destination register"

        end
        subgraph V1["Pydantic v1 Model"]
            V2Field["Pydantic v2 Model"]
        end
    end

    style V2 fill:#f9fff3
    style V1 fill:#fff6f0
    style V1Field fill:#fff6f0
    style V2Field fill:#f9fff3
```

...but, you can have separated models using Pydantic v1 and v2 in the same app.

```mermaid
graph TB
    subgraph "✅ Supported"
        direction TB

          bytes.length >= 4,
          "HashCode#asInt() requires >= 4 bytes (it only has %s bytes).",
          bytes.length);
      return (bytes[0] & 0xFF)
          | ((bytes[1] & 0xFF) << 8)
          | ((bytes[2] & 0xFF) << 16)
          | ((bytes[3] & 0xFF) << 24);
    }

    @Override
    public long asLong() {
      checkState(
          bytes.length >= 8,

        return 0;
    }

    @Override
    int readParameterWordsWireFormat(final byte[] buffer, final int bufferIndex) {
        count = readInt2(buffer, bufferIndex) & 0xFFFFL;
        return 8;
    }

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

    @Override
    public String toString() {

        int bufferIndex = 0;

        // Set maximum values
        int testCapabilities = 0xFFFFFFFF;
        byte[] testGuid = new byte[16];
        Arrays.fill(testGuid, (byte) 0xFF);
        int testSecurityMode = 0xFFFF;
        int testDialect = 0xFFFF;

        // Write to buffer
        SMBUtil.writeInt4(testCapabilities, buffer, bufferIndex);
        System.arraycopy(testGuid, 0, buffer, bufferIndex + 4, 16);