@Test
    public void testWhenFirstCharacterMustBeEscaped() {
        assertEquals("&amp;co", XML.xmlEscape("&co", false));
        assertEquals("\ufffd is a perfectly fine character;",
                XML.xmlEscape("\u0000 is a perfectly fine character;", false));
    }
@author Bjorn Borud
@author Steinar Knutsen
vespajlib/src/test/java/com/yahoo/text/XMLTestCase.java