myLog.debug ("pref.name () = {}", pref.name ());
String asasName = pref.name();
if (parentName != null) {
asasName = parentName + "." + asasName;
}
PreferenceCategoryModel category = findCategory (em, asasName, categories);
if (category != null) {
// process child nodes
String[] children = pref.childrenNames();
for (int i = 0; i < children.length; i++) {
processPref (em, pref.node (children [i]), asasName, categories);