QDox dies here on the @Nullable Integer of the type declaration TriConsumer<IQuadNode<D>, IQuadNode<D>, @Nullable Integer>
where TriConsumer<K,L,M> takes three generics.
void insertAtOnce(Collection<D> datas, TriConsumer<IQuadNode<D>, IQuadNode<D>, @Nullable Integer> debugConsumer);