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Early exit when stopListening after shutdown. #705

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Aug 15, 2019
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Original file line number Diff line number Diff line change
Expand Up @@ -165,6 +165,11 @@ public QueryListener listen(

/** Stops listening to a query previously listened to. */
public void stopListening(QueryListener listener) {
// Checks for shutdown but does not raise error, allowing it to be a no-op if client is already
// shutdown.
if (this.isShutdown()) {
return;
}
asyncQueue.enqueueAndForget(() -> eventManager.removeQueryListener(listener));
}

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