For technical information read the event bus reference document.
const ticket = EventBus.create();
const ticket = "my-unique-id";
EventBus.create(ticket);
const inbox = (data:any) => {};
const inboxId = EventBus.subscribe(ticket, inbox);
EventBus.unsubscribe(inboxId);
EventBus.unsubscribe(inboxId, ticket);
EventBus.destory(ticket);
const ticket = "my-unique-id";
const data = "Hello world!";
EventBus.publish(ticket, data);