* remove all affected effective node types from aggregates cache
* (copy keys first to prevent ConcurrentModificationException)
*/
ArrayList<Key> keys = new ArrayList<Key>(aggregates.keySet());
for (Iterator<Key> keysIter = keys.iterator(); keysIter.hasNext();) {
Key k = keysIter.next();
EffectiveNodeType ent = get(k);
if (ent.includesNodeType(name)) {
remove(k);
}
}