* kerberos authentication.
 * 
 * @author Shun
 *
 */
class SecurityBlob {

    private byte[] b = new byte[0];


    SecurityBlob () {}


    SecurityBlob ( byte[] b ) {
        set(b);
    }


    void set ( byte[] b ) {
        this.b = b == null ? new byte[0] : b;
    }


    byte[] get () {
        return this.b;
    }


    int length () {
        if ( this.b == null )

        assertEquals(new Byte("1"), NumberConversionUtil.convertNumber(Byte.class, "1"));
    }

    /**
     * @throws Exception
     */
    public void testConvertNumber_primitiveWrapper() throws Exception {
        assertEquals(new Byte("1"), NumberConversionUtil.convertPrimitiveWrapper(byte.class, "1"));
        assertEquals(new Byte("0"), NumberConversionUtil.convertPrimitiveWrapper(byte.class, null));

In essence, they are `[]byte` -> `[]byte, error` functions.

It is not possible to return *both* an error and a response.

Handlers are registered on the manager using `(*Manager).RegisterSingleHandler(id HandlerID, h SingleHandlerFn, subroute ...string)`.

The server handler function has this signature: `type SingleHandlerFn func(payload []byte) ([]byte, *RemoteErr)`.

Sample handler:
```go

                stub_frag_len = msg.length - 24;

                if ((off + stub_frag_len) > stub.length) {
                    // shouldn't happen if alloc_hint is correct or greater
                    byte[] tmp = new byte[off + stub_frag_len];
                    System.arraycopy(stub, 0, tmp, 0, off);
                    stub = tmp;
                }

                System.arraycopy(frag, 24, stub, off, stub_frag_len);

            log.error("Failed to create builtin SIDs", se);
        }
    }


    /**
     * Convert a sid_t to byte array
     * 
     * @param sid
     * @return byte encoded form
     */
    public static byte[] toByteArray ( rpc.sid_t sid ) {
        byte[] dst = new byte[1 + 1 + 6 + sid.sub_authority_count * 4];
        int di = 0;
        dst[ di++ ] = sid.revision;

        assertThat(ClassUtil.getPrimitiveClassIfWrapper(Byte.class), is(sameClass(byte.class)));
    }

    /**
     *
     */
    @Test
    public void testGetWrapperClass() {
        assertThat(ClassUtil.getWrapperClass(int.class), is(sameClass(Integer.class)));
        assertThat(ClassUtil.getWrapperClass(String.class), is(nullValue()));
        assertThat(ClassUtil.getWrapperClass(byte.class), is(sameClass(Byte.class)));
    }

    }

    int writeParameterWordsWireFormat( byte[] dst, int dstIndex ) {
        return 0;
    }
    int writeBytesWireFormat( byte[] dst, int dstIndex ) {
        int start = dstIndex;

        dst[dstIndex++] = (byte)0x04;
        dstIndex += writeString( path, dst, dstIndex );

        return dstIndex - start;
    }
    int readParameterWordsWireFormat( byte[] buffer, int bufferIndex ) {
        return 0;
    }

    SmbComNegotiate() {
        command = SMB_COM_NEGOTIATE;
        flags2 = DEFAULT_FLAGS2;
    }

    int writeParameterWordsWireFormat( byte[] dst, int dstIndex ) {
        return 0;
    }
    int writeBytesWireFormat( byte[] dst, int dstIndex ) {
        byte[] dialects;
        try {
            dialects = DIALECTS.getBytes( "ASCII" );
        } catch( UnsupportedEncodingException uee ) {
            return 0;

     */
    @Override
    protected int writeBytesWireFormat ( byte[] dst, int dstIndex ) {
        return 0;
    }


    /**
     * {@inheritDoc}
     *
     * @see jcifs.internal.smb2.ServerMessageBlock2#readBytesWireFormat(byte[], int)
     */
    @Override

				spaceCount++
			} else {
				hexCount++
			}
		}
	}

	if spaceCount == 0 && hexCount == 0 {
		return s
	}

	var buf [64]byte
	var t []byte

	required := len(s) + 2*hexCount
	if required <= len(buf) {
		t = buf[:required]
	} else {
		t = make([]byte, required)
	}

	if hexCount == 0 {
		copy(t, s)
		for i := 0; i < len(s); i++ {
			if s[i] == ' ' {
				t[i] = '+'
			}
		}