memoizeTest(new SerializableCountingSupplier());
  }

  private void memoizeTest(CountingSupplier countingSupplier) {
    Supplier<Integer> memoizedSupplier = Suppliers.memoize(countingSupplier);
    checkMemoize(countingSupplier, memoizedSupplier);
  }

  public void testMemoize_redudantly() {
    memoizeRedudantlyTest(new CountingSupplier());
    memoizeRedudantlyTest(new SerializableCountingSupplier());
  }

      if (obj instanceof CountingSupplier) {
        return this.value == ((CountingSupplier) obj).value;
      }
      return false;
    }

    @Override
    public int hashCode() {
      return value;
    }
  }

  public void testForSupplier() {
    Supplier<Integer> supplier = new CountingSupplier();

      if (obj instanceof CountingSupplier) {
        return this.value == ((CountingSupplier) obj).value;
      }
      return false;
    }

    @Override
    public int hashCode() {
      return value;
    }
  }

  public void testForSupplier() {
    Supplier<Integer> supplier = new CountingSupplier();