How to make a non-cyclic output of links to neighboring resources using pdoNeighbors?

Question

MODX

All the best, the question is as follows, there is a list of resources and for them I implemented a transition to neighboring resources using pdoNeighbors, and it is necessary that the first resource in the tree has a link to the next document hidden, since it leads to the last document in the tree . I will be grateful for help.
pdoHeighbors code:

Answer 1

&loop=`0`?