MPMLink - Related Assembly Filter - API

If it can help, i post what I've effectively done : a wizard to launch the retrieval of MPMLink objects (like operations) (PDMLink 11.0), from a Part Structure with a Related Assembly Filter.

Here is some code (groovy) :

Get a Structure Parts with Filter :

//starts from an oid of a saved filter
NavigationCriteria navCriteria = (NavigationCriteria) BasicWebjectDelegate.getObjectByUfid(navCriteriaID)

if (navCriteria) {
 
 WTCollection wtSet = new WTHashSet()
 wtSet.add(startingPart)
 
 // get all the parts of the structure with filter applied
 PartCollector.Builder builder = new PartCollector.Builder(wtSet, navCriteria)
 PartCollector initialCollector = builder.build()
 PartCollectedResult initialResult = initialCollector.collect()

Then, for the starting part of the structure (it was the customer data model for this implementation), get ProcessPlan then Operations, with same filter (with ncserverholder):

NavigationCriteriaHolder nch = NavigationCriteriaHolder.buildEmptyNavigationCriteriaHolder()
nch = NavigationCriteriaHolderServerHelper.buildNavigationCriteriaFromConfigSpec(nch, navCriteria.configSpec)

NCServerHolder ncServerHolder = new NCServerHolder(nch.getCollectorId(), navCriteria)

QueryResult qrProcesssPlans = IteratedNavigationCriteriaHelper.service.navigateInternalIteratedLinks(ncServerHolder, part, MPMPartToProcessPlanLink.PROCESS_PLAN_ROLE, MPMPartToProcessPlanLink.class, true, true)

if (qrProcesssPlans.size() >0){
 
 MPMProcessPlan gamme = (MPMProcessPlan)qrProcesssPlans.nextElement()

 QueryResult qrOperations = MPMProcessPlanHelper.service.getOperationsFromOperationHolder(gamme, ncServerHolder, false)
 
}