@Override
public <N extends Identifiable<K> & ChildOf<? super T>, K extends Identifier<N>> InstanceIdentifierBuilderImpl<N>
- child(final Class<N> listItem, final K listKey) {
+ child(final Class<@NonNull N> listItem, final K listKey) {
return addNode(IdentifiableItem.of(listItem, listKey));
}