String returnType = methodSig.substring(methodSig.indexOf(")")+1);
String returnType = getMethodSig().substring(getMethodSig().indexOf(")")+1);
   public void visit(Code obj) {	String returnType = methodSig.substring(methodSig.indexOf(")")+1);	if (returnType.startsWith("[")) {		nullOnTOS = false;		super.visit(obj);		}	}