Persist some data to see how it interacts with the Query Change Listener

Main.java

// Add some data to see how the change listener reacts
Player tomBrady = new Player();
tomBrady.setFirstName("Tom");
tomBrady.setLastName("Brady");
tomBrady.setPosition("QB");
tomBrady.setHallOfFame(true);

// On Item Added should be fired
manager.saveEntity(tomBrady);

// He was ejected from the Hall of Fame because of Deflate gate.
tomBrady.setHallOfFame(false);
// See that he was removed from the result set and teh onItemRemoved was fired.
manager.saveEntity(tomBrady);

// Modify an entity and save, the onItemUpdated should be fired
johnElway.setDidNotCheat(true);
manager.saveEntity(johnElway);