gc.mark();
int count = listIdentifiers(gc);
LOG.debug("stop scanning; currently " + count + " identifiers");
LOG.debug("deleting...");
gc.getDataStore().clearInUse();
assertTrue(gc.sweep() > 0);
int count2 = listIdentifiers(gc);
assertEquals(count - 1, count2);
// verify the node was moved, and that the binary is still there
n = root.getNode("node1").getNode("nodeWithBlob").getNode("sub");