System.Globalization.GregorianCalendarHelper.IsLeapYear C# (CSharp) 메소드

        public bool IsLeapYear(int year, int era) {
            year = GetGregorianYear(year, era);
            return (year % 4 == 0 && (year % 100 != 0 || year % 400 == 0));
        }
    

 public override bool IsLeapYear(int year, int era)
 {
     return(helper.IsLeapYear(year, era));
 }