Interface EventCollection

const list = models.collection();

list.on(Events.ADDED, (items) => {
  console.log('new items added:', items);
});

list.add(1, 2, 3); // "new items added: [1, 2, 3]"

const list = models.collection(1, 2, 3);

list.on(Events.REMOVED, (items) => {
  console.log('items removed:', items);
});

list.remove(2, 3); // "items removed: [2, 3]"