in concurrency-loadbalancer-core/src/main/java/com/uber/concurrency/loadbalancer/AbstractConcurrencyLoadBalancer.java [77:82]
void onTaskCompleted(T t, boolean succeed) {
metrics.markCompletion(t, succeed);
for (CompletableTask.Listener<T> listener : listeners) {
listener.onComplete(t, succeed);
}
}