StringBuilder sb = new StringBuilder();
boolean first = true;
for (Iterator<JPackage> itr = codeModel.packages(); itr.hasNext();) {
JPackage package1 = itr.next();
for (Iterator<JDefinedClass> citr = package1.classes(); citr.hasNext();) {
if (!first) {
sb.append(", ");
} else {
first = false;
}