template<typename... Args>
                bool in(Args... args) const {
-                       //return in(first) || in(rest...);
-
-            // Credit: https://articles.emptycrate.com/2016/05/14/folds_in_cpp11_ish.html
-            bool result = false;
-            (void) std::initializer_list<int>{ (result = result || in(args), 0)... };
-            return result;
+                       // Credit: https://articles.emptycrate.com/2016/05/14/folds_in_cpp11_ish.html
+                       bool result = false;
+                       (void) std::initializer_list<int>{ (result = result || in(args), 0)... };
+                       return result;
                }
 
                bool in(IdString rhs) const { return *this == rhs; }