char ch = str.charAt(i);
            // handle unicode
            if (ch > 0xfff) {
                out.append("\\u").append(hex(ch));
            } else if (ch > 0xff) {
                out.append("\\u0").append(hex(ch));
            } else if (ch > 0x7f) {
                out.append("\\u00").append(hex(ch));
            } else if (ch < 32) {
                switch (ch) {
                    case '\b':

import com.google.common.annotations.GwtCompatible;
import java.nio.charset.StandardCharsets;

/**
 * Static methods pertaining to ASCII characters (those in the range of values {@code 0x00} through
 * {@code 0x7F}), and to strings containing such characters.
 *
 * <p>ASCII utilities also exist in other classes of this package:
 *
 * <ul>
 *   <!-- TODO(kevinb): how can we make this not produce a warning when building gwt javadoc? -->

		0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff, 0xff,
		0xff, 0xff, 0xff, 0x31, 0x00, 0x00, 0x00, 0x00,
		0x00, 0x00, 0x00, 0x3a, 0x00, 0x00, 0x00, 0x00,
		0x00, 0x00, 0x00, 0x50, 0x4b, 0x06, 0x07, 0x00,
		0x00, 0x00, 0x00, 0x6b, 0x00, 0x00, 0x00, 0x00,
		0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x50,
		0x4b, 0x05, 0x06, 0x00, 0x00, 0x00, 0x00, 0xff,
		0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,

	MOVL	ptr+0(FP), AX
	TESTL	$7, AX
	JZ	2(PC)
	MOVL	0, AX // crash with nil ptr deref
	LEAL	ret_lo+4(FP), BX
	// MOVQ (%EAX), %MM0
	BYTE $0x0f; BYTE $0x6f; BYTE $0x00
	// MOVQ %MM0, 0(%EBX)
	BYTE $0x0f; BYTE $0x7f; BYTE $0x03
	// EMMS
	BYTE $0x0F; BYTE $0x77
	RET

        assertNull(serverData.guid);
    }

    /**
     * Test setting and getting byte field (sflags)
     */
    @ParameterizedTest
    @ValueSource(bytes = { 0x00, 0x01, 0x7F, (byte) 0x80, (byte) 0xFF })
    @DisplayName("Test sflags field with various byte values")
    public void testSflagsField(byte value) {
        // When
        serverData.sflags = value;

        // Then

        void testMaximumHashAlgoValues() throws SMBProtocolDecodingException {
            int[] hashAlgos = { 0xFFFF, 0x0000, 0x7FFF };
            byte[] salt = { (byte) 0xFF, 0x00, 0x7F };
            PreauthIntegrityNegotiateContext originalContext = new PreauthIntegrityNegotiateContext(mockConfig, hashAlgos, salt);

            int encoded = originalContext.encode(buffer, 0);

	o = append(o, 0xb6, 0x64, 0x65, 0x70, 0x65, 0x6e, 0x64, 0x47, 0x6c, 0x6f, 0x62, 0x61, 0x6c, 0x4c, 0x6f, 0x63, 0x6b, 0x53, 0x65, 0x72, 0x76, 0x65, 0x72)
	o = msgp.AppendBool(o, z.dependGlobalLockServer)
	// string "dependGlobalIsDistErasure"
	o = append(o, 0xb9, 0x64, 0x65, 0x70, 0x65, 0x6e, 0x64, 0x47, 0x6c, 0x6f, 0x62, 0x61, 0x6c, 0x49, 0x73, 0x44, 0x69, 0x73, 0x74, 0x45, 0x72, 0x61, 0x73, 0x75, 0x72, 0x65)
	o = msgp.AppendBool(o, z.dependGlobalIsDistErasure)

	// map header, size 3
	// string "LastFailedCount"
	o = append(o, 0x83, 0xaf, 0x4c, 0x61, 0x73, 0x74, 0x46, 0x61, 0x69, 0x6c, 0x65, 0x64, 0x43, 0x6f, 0x75, 0x6e, 0x74)
	o = msgp.AppendUint64(o, z.LastFailedCount)
	// string "TotalDroppedCount"
	o = append(o, 0xb1, 0x54, 0x6f, 0x74, 0x61, 0x6c, 0x44, 0x72, 0x6f, 0x70, 0x70, 0x65, 0x64, 0x43, 0x6f, 0x75, 0x6e, 0x74)
	o = msgp.AppendUint64(o, z.TotalDroppedCount)
	// string "TotalDroppedBytes"

0x53, 0x74, 0x61, 0x74, 0x73, 0x3e, 0x3c, 0x42, 0x79, 0x74, 0x65, 0x73, 0x53, 0x63, 0x61, 0x6e, 0x6e, 0x65, 0x64, 0x3e, 0x35, 0x30, 0x3c, 0x2f, 0x42, 0x79, 0x74, 0x65, 0x73, 0x53, 0x63, 0x61, 0x6e, 0x6e, 0x65, 0x64, 0x3e, 0x3c, 0x42, 0x79, 0x74, 0x65, 0x73, 0x50, 0x72, 0x6f, 0x63, 0x65, 0x73, 0x73, 0x65, 0x64, 0x3e, 0x35, 0x30, 0x3c, 0x2f, 0x42, 0x79, 0x74, 0x65, 0x73, 0x50, 0x72, 0x6f, 0x63, 0x65, 0x73, 0x73, 0x65, 0x64, 0x3e, 0x3c, 0x42, 0x79, 0x74, 0x65, 0x73, 0x52, 0x65, 0x74, 0x75, 0x72, 0x6e,...

	o = append(o, 0xa6, 0x42, 0x75, 0x63, 0x6b, 0x65, 0x74)
	o = msgp.AppendString(o, z.Bucket)
	// string "Prefix"
	o = append(o, 0xa6, 0x50, 0x72, 0x65, 0x66, 0x69, 0x78)
	o = msgp.AppendString(o, z.Prefix)
	// string "Encryption"
	o = append(o, 0xaa, 0x45, 0x6e, 0x63, 0x72, 0x79, 0x70, 0x74, 0x69, 0x6f, 0x6e)
	o, err = z.Encryption.MarshalMsg(o)
	if err != nil {
		err = msgp.WrapError(err, "Encryption")
		return
	}
	return
}