@Override
public CompletableFuture<Void> removeListener(AtomicValueEventListener<V> listener) {
checkNotNull(listener, "listener must not be null");
final MeteringAgent.Context newTimer = monitor.startTimer(REMOVE_LISTENER);
MapEventListener<String, byte[]> mapListener = listeners.remove(listener);
if (mapListener != null) {
return backingMap.removeListener(mapListener).whenComplete((r, e) -> newTimer.stop(e));
} else {
newTimer.stop(null);
return CompletableFuture.completedFuture(null);
}
}
