/// <summary>
 ///     Get TimeSpan in years.
 /// </summary>
 /// <param name="span"></param>
 /// <returns></returns>
 public static int Year(TimeSpan span)
 {
     return(InternalClasses._year(span));
 }
 /// <summary>
 ///     Get TimeSpan in months.
 /// </summary>
 /// <param name="span"></param>
 /// <returns></returns>
 public static int Month(TimeSpan span)
 {
     return(InternalClasses._month(span));
 }