System.Text.SuperEncoding.GetMaxCharCount C# (CSharp) Метод

        public override int GetMaxCharCount(int byteCount)
        {
            if (byteCount < 0)
                throw new ArgumentOutOfRangeException("byteCount");
            long count = byteCount + 3;
            if (count > int.MaxValue)
                throw new ArgumentOutOfRangeException("byteCount");
            return (int)count;
        }