LeafNode node = new LeafNode(serviceConfiguration, testNode, client);
root.add(node);
node.subscribe("someid", client); // make the owner subscriber
node.subscribe("otherid1", new EntityImpl("yoda", "starwars.com", "spaceship"));
node.subscribe("otherid2", new EntityImpl("r2d2", "starwars.com", "desert"));
node.subscribe("otherid3", new EntityImpl("anakin", "starwars.com", "deathstar"));
assertNotNull(root.find(testNode));
// make sure we have 4 subscribers
assertEquals(4, node.countSubscriptions());