Gson.fromJson, how to use dynamic json value on my POJO class?

gson class:

import com.google.gson.*;

myJson:

{
"time": "notime",
"query": {
     "pages": {
         "18302": {
             "title": "Car",
             "pagelanguage": "en"
         }
      }
}
}

Custom POJO class:

public class MyClass {
    public String time;
    public Query query;

    public class Query {
        public ? pages;

        //...
    }
}

Java code:

Gson gson = new GsonBuilder().create();
MyClass data = gson.fromJson(myJson, MyClass.class);

What Class should i set to my "pages" variable to handle dynamically changing (for exp: "18302") json key?