}
    };
  }

  public enum Value {
    INSTANCE;
  }

  public enum ListSizeDistribution {
    UNIFORM_0_TO_2(0, 2),
    UNIFORM_0_TO_9(0, 9),
    ALWAYS_0(0, 0),
    ALWAYS_10(10, 10);

    final int min;
    final int max;

    ListSizeDistribution(int min, int max) {
      this.min = min;
      this.max = max;
    }