Reports

The problem is solved by adding a type variable to the IMyDummyList interface

public interface IMyDummyList<I extends IMyDummy> {
    List<I> getItems();
}

public abstract class Abs<T extends JsonBase, I extends IMyDummy> implements IMyDummyList<I> {    public abstract List<I> getItems();}


// you can do it even like this way:

public abstract class Abs<T extends JsonBase & IMyDummy> implements IMyDummyList<T> {    public abstract List<T> getItems();
}

// and last step was:

public abstract class AbsMyIntListImpl extends Abs<MyDummyClass, IMyDummyImpl> {
    public abstract List<IMyDummyImpl> getItems();
}

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