tester.ignore(MoreObjects.class.getMethod("firstNonNull", Object.class, Object.class));
    tester.testAllPublicStaticMethods(MoreObjects.class);
    tester.testAllPublicInstanceMethods(MoreObjects.toStringHelper(new TestClass()));
  }

  /** Test class for testing formatting of inner classes. */
  private static class TestClass {}

  }

  @Override
  public String toString() {
    if (count() > 0) {
      return MoreObjects.toStringHelper(this)
          .add("xStats", xStats)
          .add("yStats", yStats)
          .add("populationCovariance", populationCovariance())
          .toString();
    } else {
      return MoreObjects.toStringHelper(this)
          .add("xStats", xStats)
          .add("yStats", yStats)
          .toString();
    }

    }

    @Override
    public int hashCode() {
      return Objects.hash(closeable, thrown, suppressed);
    }

    @Override
    public String toString() {
      return MoreObjects.toStringHelper(this)
          .add("closeable", closeable)
          .add("thrown", thrown)
          .add("suppressed", suppressed)
          .toString();
    }
  }

    final int item;

    TestObject(int group, int item) {
      this.group = group;
      this.item = item;
    }

    @Override
    public String toString() {
      return MoreObjects.toStringHelper("TestObject")
          .add("group", group)
          .add("item", item)
          .toString();
    }
  }

  private static final class MockEquivalence extends Equivalence<Object> {

    final int item;

    TestObject(int group, int item) {
      this.group = group;
      this.item = item;
    }

    @Override
    public String toString() {
      return MoreObjects.toStringHelper("TestObject")
          .add("group", group)
          .add("item", item)
          .toString();
    }
  }

  private static final class MockEquivalence extends Equivalence<Object> {

        return unit.toNanos(duration) == that.unit.toNanos(that.duration);
      }
      return false;
    }

    @Override
    public String toString() {
      return MoreObjects.toStringHelper(this)
          .add("duration", duration)
          .add("unit", unit)
          .toString();
    }
  }

    }

    @Override
    public int hashCode() {
      return Objects.hash(closeable, thrown, suppressed);
    }

    @Override
    public String toString() {
      return MoreObjects.toStringHelper(this)
          .add("closeable", closeable)
          .add("thrown", thrown)
          .add("suppressed", suppressed)
          .toString();
    }
  }

    if (count() > 0) {
      return MoreObjects.toStringHelper(this)
          .add("count", count)
          .add("mean", mean)
          .add("populationStandardDeviation", populationStandardDeviation())
          .add("min", min)
          .add("max", max)
          .toString();
    } else {
      return MoreObjects.toStringHelper(this).add("count", count).toString();
    }
  }

          && totalLoadTime == other.totalLoadTime
          && evictionCount == other.evictionCount;
    }
    return false;
  }

  @Override
  public String toString() {
    return MoreObjects.toStringHelper(this)
        .add("hitCount", hitCount)
        .add("missCount", missCount)
        .add("loadSuccessCount", loadSuccessCount)
        .add("loadExceptionCount", loadExceptionCount)

          && totalLoadTime == other.totalLoadTime
          && evictionCount == other.evictionCount;
    }
    return false;
  }

  @Override
  public String toString() {
    return MoreObjects.toStringHelper(this)
        .add("hitCount", hitCount)
        .add("missCount", missCount)
        .add("loadSuccessCount", loadSuccessCount)
        .add("loadExceptionCount", loadExceptionCount)