return insertionOrder;
    }
  }

  @J2ktIncompatible
  @GwtIncompatible // used only from suite
  @AndroidIncompatible
  public static class SampleDoubles extends SampleElements<Double> {
    public SampleDoubles() {
      super(-0.0, Long.MAX_VALUE * 3.0, Double.MAX_VALUE, Double.POSITIVE_INFINITY, Double.NaN);
    }
  }