How to deserialize a json string which one of its subtype is generic

Question

I have a class as shown below:

Class MyClass
{
   int a;
   String b;
   List<T> resource;
}

resource can be a candidate of 2 type of list of classes: Class A or Class B

How can I deserialize the json string to the MyClass type correctly? I used Gson library, are there any solutions in that library?

Any help is greatly appreciated. Thanks in advance...!