Quantiles.ScaleAndIndexes intermediate = Quantiles.scale(10).indexes(1, 3, 5);
    assertThrows(IllegalArgumentException.class, () -> intermediate.compute(EMPTY_DATASET));
  }

  public void testScale_indexes_varargs_compute_doubleVarargs_empty() {
    Quantiles.ScaleAndIndexes intermediate = Quantiles.scale(10).indexes(1, 3, 5);
    assertThrows(IllegalArgumentException.class, () -> intermediate.compute(new double[] {}));
  }