public void visitNewClass(JCNewClass node) {
   node.constructor = null;
   super.visitNewClass(node);
 }
 @Override
 public Void visitNewClass(final NewClassTree tree, final Void p) {
   JCNewClass newClass = (JCNewClass) tree;
   newClass.args = replace(newClass.args);
   return super.visitNewClass(tree, p);
 }