* In setup, create a persistent instance and get its oid.
* The oid is a valid parameter to the cache APIs.
*/
protected void localSetUp() {
addTearDownClass(PCPoint.class);
PCPoint point = new PCPoint(50, 100);
getPM().currentTransaction().begin();
pm.makePersistent(point);
pointoid = pm.getObjectId(point);
pointoidCollection = new HashSet();
pointoidCollection.add(pointoid);