}
      }

      List<Integer> actualCounts =
          Lists.transform(
              keys,
              new Function<String, Integer>() {
                @Override
                public Integer apply(String key) {
                  return multiset.count(key);
                }
              });
      assertEquals("Counts not as expected", Ints.asList(deltas), actualCounts);
    } finally {
      pool.shutdownNow();

        }
      }

      List<Integer> actualCounts =
          Lists.transform(
              keys,
              new Function<String, Integer>() {
                @Override
                public Integer apply(String key) {
                  return multiset.count(key);
                }
              });
      assertEquals("Counts not as expected", Ints.asList(deltas), actualCounts);
    } finally {
      pool.shutdownNow();