new SubscriptionEvent(type, topicId)
Information about how a subscription went on the server side. If you do two subscriptions to the same Topic, you will still only get one such message - thus if you want one for each, you'd better add two listeners too, before doing any of the subscribes. Note: this also fires upon every reconnect. Make note of the SubscriptionEventType#LOST_MESSAGES!
What TopicIc this relates to.
How the subscription fared.