Method track

bind/java/Seq.java:257–259

(int refnum, GoObject obj)

		private final Collection<GoRef> refs = Collections.synchronizedCollection(new HashSet<GoRef>());

		void track(int refnum, GoObject obj) {
			refs.add(new GoRef(refnum, obj, this));
		}

		GoRefQueue() {
			Thread daemon = new Thread(new Runnable() {