Method begin

include/boost/parser/parser.hpp:1759–1763

            case_fold_view(V base) : base_(std::move(base)) {}

            iterator begin() const
            {
                return iterator(
                    text::detail::begin(base_), text::detail::end(base_));
            }
            auto end() const { return text::detail::end(base_); }

        private: