on method

Listener<T> on(
  1. T event,
  2. EventCallback callback
)

API to register for notification. It is mandatory to pass event and callback parameters. event - Event used for the subscription. A valid event is mandatory. callback - EventCallback function registered to receive events emitted from the publisher. A valid callback function is mandatory.

Implementation

Listener<T> on(T event, EventCallback callback) =>
    listen(event, callback, false);