protected CollaboratorFunctionsChunk findCollFuncByExtKey(String extkey, String vmu) throws ClipsException {
if (collabList == null) {
collabList = new ArrayList<CollaboratorLocal>();
DirectoryCollaborator dir = DirectoryLocator.getDirectory(DirectoryCollaborator.class);
DirectoryLpuItem lpu = UserInfo.get().getCollaborator().getLpu();
List<DirectoryCollaboratorItem> items = dir.getItemsFiltered(lpu, true, false, false);
for (int i = 0; i < items.size(); i++) {
CollaboratorLocal collab = new CollaboratorLocal(items.get(i).getID(), null);//NULL AL
collabList.add(collab);
}