bundleRefs = new LinkedList<String>();
for (int i = 0; i < 50; i++) {
String b = Integer.toString(i);
bundleRefs.add(b);
}
registry = new IsolationConstraintRegistryImpl();
for (int i = 0; i < 3; i++) {
for (String b : bundleRefs) {
for (String p : bundleRefs) {
if (!p.equals(b) && b.hashCode() < p.hashCode()) {
if (RANDOM.nextDouble() < 0.4) {