counters.add(listener);
        assertEquals(expected.count(listener), counters.count(listener));
      }

      @Override
      public String toString() {
        return "incrementing";
      }
    };
  }

  private static <T> ImmutableMultiset<T> multiset(T value, int count) {
    return multiset(ImmutableMap.of(value, count));
  }

        counters.add(listener);
        assertEquals(expected.count(listener), counters.count(listener));
      }

      @Override
      public String toString() {
        return "incrementing";
      }
    };
  }

  private static <T> ImmutableMultiset<T> multiset(T value, int count) {
    return multiset(ImmutableMap.of(value, count));
  }