public static RotationalStiffness MicronewtonMetersPerDegree <T>(this T value) =>
 RotationalStiffness.FromMicronewtonMetersPerDegree(Convert.ToDecimal(value));
 public void NumberToMicronewtonMetersPerDegreeTest() =>
 Assert.Equal(RotationalStiffness.FromMicronewtonMetersPerDegree(2), 2.MicronewtonMetersPerDegree());