What 's function about the properties that the properties vars and unknownFields,in the Job Class

[jaychang9]

public class Job implements Serializable {
private Map<String,Object> vars;
private Map<String,Object> unknownFields = new HashMap<String,Object>();
...
}

What 's function about the properties that the properties vars and unknownFields .

[gresrun]

I'm not sure I understand your question.