public static PorousMediumPermeability SquareCentimeters <T>(this T value) =>
 PorousMediumPermeability.FromSquareCentimeters(Convert.ToDouble(value));
 public void NumberToSquareCentimetersTest() =>
 Assert.Equal(PorousMediumPermeability.FromSquareCentimeters(2), 2.SquareCentimeters());