class Program
    {
        
        public class Args
        {
            [Option('n', "name", Required = true)]
            public string Name { get; set; }

        }
        
        static void Main(string[] args)
        {

            Args parsedArgs;
            Parser.Default.ParseArguments<Args>(args).WithParsed(result => parsedArgs = result).WithNotParsed(ThrowOnParseError);
        }

        private static void ThrowOnParseError(IEnumerable<Error> errors)
        {
            var excList = new List<Exception>();
            foreach (var err in errors)
            {
                excList.Add(new ArgumentException(err.ToString()));
            }
            if (excList.Any())
                throw new AggregateException(excList);
        }
    }