@Override
public Node visit(ReturnStmt _n, Object _arg) {
Expression expr = cloneNodes(_n.getExpr(), _arg);
Comment comment = cloneNodes(_n.getComment(), _arg);
ReturnStmt r = new ReturnStmt(
_n.getBeginLine(), _n.getBeginColumn(), _n.getEndLine(), _n.getEndColumn(),
expr
);
r.setComment(comment);
return r;
}