|LensEventListener<T extends LensEvent>||
The handler method should not block so that the event service can proceed to notifying other listeners as soon as possible.
Singleton which is responsible for managing the event-listener mapping as well as processing events.
|AsyncEventListener<T extends LensEvent>||
Event listeners should implement this class if they wish to process events asynchronously.
Instantiates a new lens event.
This event is triggered by the AlarmService whenever a scheduled query needs to be scheduled.
Event type to know what kind of operations we want.
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