Function rbegin

Source/Utils/json.hpp:21106–21109

! @brief returns an iterator to the reverse-beginning Returns an iterator to the reverse-beginning; that is, the last element. @image html range-rbegin-rend.svg "Illustration from cppreference.com" @complexity Constant. @requirement This function helps `basic_json` satisfying the [ReversibleContainer](https://en.cppreference.com/w/cpp/named_req/R

        @since version 1.0.0
        */
        reverse_iterator rbegin() noexcept
        {
            return reverse_iterator(end());
        }

        /*!
        @copydoc basic_json::crbegin()