if(!(e instanceof Literal)) {
Expression expr=removeCastString(e);
if(expr instanceof Variable) {
// do not preserve BIF PreserveSingleQuotes return value
Member member = ((Variable)expr).getFirstMember();
if(member instanceof BIF) {
BIF bif=(BIF) member;
if(bif.getClazz().getName().equals(PreserveSingleQuotes.class.getName())) {
printOut.setExpr(bif.getArguments()[0].getValue());