}
// to string
for (String attrName : additionalAttrMap.keySet()) {
Object attrValue = additionalAttrMap.get(attrName);
if (additionAttrValueRenderer != null) {
attrValue = additionAttrValueRenderer.callback(attrName,
attrValue);
}
if (attrValue != null) {
String attr = String
.format("%s=\"%s\"", attrName, StringEscapeUtils