@Test
    public void forcedAttribute() {
        xml.openTag("a").forceAttribute(new Utf8String("nalle"), "\"").closeTag();
        assertEquals("<a nalle=\"&quot;\"/>\n", getWritten());
    }
This test is currently incomplete. Also much tested in the prelude module though.

@author bratseth
vespajlib/src/test/java/com/yahoo/text/XMLWriterTestCase.java