public static RotationalStiffness CentinewtonMetersPerDegree <T>(this T value) =>
 RotationalStiffness.FromCentinewtonMetersPerDegree(Convert.ToDecimal(value));
 public void NumberToCentinewtonMetersPerDegreeTest() =>
 Assert.Equal(RotationalStiffness.FromCentinewtonMetersPerDegree(2), 2.CentinewtonMetersPerDegree());