Mono.Rocks.Check.Categories C# (CSharp) Метод

        public static void Categories(object categories)
        {
            if (categories == null)
                throw new ArgumentNullException ("categories");
        }

 public static IEnumerable <string> Tokens(this TextReader self, params Func <char?, char, bool>[] categories)
 {
     Check.Self(self);
     Check.Categories(categories);
     if (categories.Length == 0)
     {
         throw new ArgumentException("categories", "Must provide at least one catagory");
     }
     return(Tokens(self, TextReaderRocksOptions.CloseReader, categories));
 }