if (count.getAndIncrement() == 0) {
              throw e;
            }
            return key.toString();
          }
        };
    CountingRemovalListener<Integer, String> removalListener = countingRemovalListener();
    LoadingCache<Integer, String> cache =
        CacheBuilder.newBuilder().removalListener(removalListener).build(failOnceFunction);

    UncheckedExecutionException ue =