private void ensureNotPublic(String cNode, FieldNode fNode) {
   String fName = fNode.getName();
   // TODO: do we need to lock down things like: $ownClass
   if (fNode.isPublic() && !fName.contains("$") && !(fNode.isStatic() && fNode.isFinal())) {
     addError(
         "Public field '"
             + fName
             + "' not allowed for "
             + MY_TYPE_NAME
             + " class '"
             + cNode
             + "'.",
         fNode);
   }
 }
 private void createConstructorMapCommon(ClassNode cNode, BlockStatement body) {
   final List<FieldNode> fList = cNode.getFields();
   for (FieldNode fNode : fList) {
     if (fNode.isPublic()) continue; // public fields will be rejected elsewhere
     if (cNode.getProperty(fNode.getName()) != null) continue; // a property
     if (fNode.isFinal() && fNode.isStatic()) continue;
     if (fNode.getName().contains("$")) continue; // internal field
     if (fNode.isFinal() && fNode.getInitialExpression() != null)
       body.addStatement(checkFinalArgNotOverridden(cNode, fNode));
     body.addStatement(createConstructorStatementDefault(fNode));
   }
   final Parameter[] params = new Parameter[] {new Parameter(HASHMAP_TYPE, "args")};
   doAddConstructor(
       cNode,
       new ConstructorNode(
           ACC_PUBLIC,
           params,
           ClassNode.EMPTY_ARRAY,
           new IfStatement(
               equalsNullExpr(new VariableExpression("args")), new EmptyStatement(), body)));
 }