public class Example {
    interface MyType {
        // Add methods here
    }

    private List<what-goes-here?> store = new ArrayList<>();


    public <T extends Enum<?> & MyType> void registerType(@Nonnull Class<T> type) {
        store.add(type);
    }


    public void processAll() {
        for (T t : store) {         // Where do I define T?
            // process t
        }
    }
}