Gremlin query to check if a value exists in the given external map

I would like to traverse the graph until my node property value exist in the set. Set contains id of the nodes and trivial objects.

The query is like:

public Map<String,Object> getNodes( Long startNodeID, Set<String, TraversedNode> mySet){
      return g.withSideEffect("x",mySet).V(startNodeID)
             .repeat( ...something )
             .choose( ...something )
             .until( myProperty is found in the given set  )
}

I have tried many things in the until part but couldn't get it. Any suggestions to achieve? It maybe related to values and where keywords.

values("id").where(P.within("x")) doesn't work

Solution

Using the air-routes graph as sample data, a simple query can be written that looks for IDs within a provided set, as the query progresses. As mentioned in the comments, it is not 100% clear if this is what you are looking for but perhaps it will help with follow on questions.

gremlin> g.withSideEffect('s',[48,54,62,12]).
......1>   V(44).
......2>   repeat(out().simplePath()).
......3>   until(where(within('s')).by(id).by()).
......4>   path().
......5>   limit(5)

==>[v[44],v[8],v[48]]
==>[v[44],v[8],v[54]]
==>[v[44],v[8],v[12]]
==>[v[44],v[13],v[12]]
==>[v[44],v[13],v[48]]

It may appear that you should just be able to do until(hasId(within('s'))), but in that case 's' is treated as the literal string "s" and not a symbol representing the set called s. When a predicate is nested inside a where step, as in where(within('s')), Gremlin treats that as a special case and will treat s as the name of something declared earlier.