MyAppNetworkServiceMock.java

public class MyAppNetworkServiceMock extends MyAppNetworkService {

    @Override
    public List<Object> getUsers() {

        List<Object> objects = new ArrayList<>();

        //Mocking
        //.....................
        objects.add(new Object());
        objects.add(new Object());

        //More Mocking
        //.....................
        objects.add(new Object());
        //.....................
        //.....................

        return objects;
    }
    
}