}
    }

    private void writeXmlAttributeEncoded(CharSequence message) throws IOException {
        assert message != null;
        int len = message.length();
        for (int i = 0; i < len;) {
            int codePoint = Character.codePointAt(message, i);
            i += Character.charCount(codePoint);
            writeXmlAttributeEncoded(codePoint);
        }
    }