public static IEnumerable <TValue> FindAll <TValue>(
     this ParserResult result,
     ArrayCommandArgument <TValue> argument
     )
 {
     return(result.Parsed.FindAll(argument));
 }
 public static bool TryFindAll <TValue>(
     this ParserResult result,
     ArrayCommandArgument <TValue> argument,
     out IEnumerable <TValue> values
     )
 {
     return(result.Parsed.TryFindAll(argument, out values));
 }