public static RotationalStiffness MillinewtonMetersPerDegree <T>(this T value) =>
 RotationalStiffness.FromMillinewtonMetersPerDegree(Convert.ToDecimal(value));
 public void NumberToMillinewtonMetersPerDegreeTest() =>
 Assert.Equal(RotationalStiffness.FromMillinewtonMetersPerDegree(2), 2.MillinewtonMetersPerDegree());