Interface that represents all messenger events provided via VIMessengerDelegate.
@property (nonatomic, assign, readonly) VIMessengerEventType eventType
Type of event.
@property (nonatomic, assign, readonly) VIMessengerActionType incomingAction
Action that is the reason this event was triggered.
@property (nonatomic, strong, readonly) NSString *userId
Voximplant user identifier, ex firstname.lastname@example.org, of the user that initiated the event.