* <a href="http://www.unicode.org/glossary/#supplementary_code_point">supplementary Unicode code
 * points</a> in the range {@code 0x10000} to {@code 0x10FFFF} which includes the majority of
 * assigned characters, including important CJK characters and emoji.
 *
 * <p>Supplementary characters are <a

        try {
            System.arraycopy(this.sbuf, 0, buffer, 0, 4 + SMB1_HEADER_LENGTH);
            final int size = Encdec.dec_uint16be(buffer, 2) & 0xFFFF;
            if (size < SMB1_HEADER_LENGTH + 1 || 4 + size > Math.min(0xFFFF, getContext().getConfig().getMaximumBufferSize())) {
                throw new IOException("Invalid payload size: " + size);
            }

	ANDS	$0xffff, R2                         // ANDS	$65535, R2                      // 423c40f2
	AND	$0x7fffffff, R3                     // AND	$2147483647, R3                 // 63784092
	ANDS	$0x0ffffffff80000000, R2            // ANDS	$-2147483648, R2                // 428061f2
	AND	$0xfffff, R2                        // AND	$1048575, R2                    // 424c4092

	{"\u0250\u0250\u0250\u0250\u0250", []byte("\u2C6F\u2C6F\u2C6F\u2C6F\u2C6F")}, // grows one byte per char
	{"a\u0080\U0010FFFF", []byte("A\u0080\U0010FFFF")},                           // test utf8.RuneSelf and utf8.MaxRune
}

var lowerTests = []StringTest{
	{"", []byte("")},
	{"abc", []byte("abc")},
	{"AbC123", []byte("abc123")},