50    {
   51        return argument switch
   52        {
   53            ExceptionArgument.collectionSelector => "collectionSelector", 
   54            ExceptionArgument.count => "count", 
   55            ExceptionArgument.elementSelector => "elementSelector", 
   56            ExceptionArgument.enumerable => "enumerable", 
   57            ExceptionArgument.first => "first", 
   58            ExceptionArgument.func => "func", 
   59            ExceptionArgument.index => "index", 
   60            ExceptionArgument.inner => "inner", 
   61            ExceptionArgument.innerKeySelector => "innerKeySelector", 
   62            ExceptionArgument.keySelector => "keySelector", 
   63            ExceptionArgument.outer => "outer", 
   64            ExceptionArgument.outerKeySelector => "outerKeySelector", 
   65            ExceptionArgument.predicate => "predicate", 
   66            ExceptionArgument.resultSelector => "resultSelector", 
   67            ExceptionArgument.second => "second", 
   68            ExceptionArgument.selector => "selector", 
   69            ExceptionArgument.source => "source", 
   70            ExceptionArgument.third => "third", 
   71            ExceptionArgument.size => "size", 
   72            _ => string.Empty, 
   73        };
   74    }