Method begin

dependencies/json/json.hpp:4008–4011

return iterator begin (needed for range-based for)

    /// return iterator begin (needed for range-based for)
    iteration_proxy_value<IteratorType> begin() noexcept
    {
        return iteration_proxy_value<IteratorType>(container.begin());
    }

    /// return iterator end (needed for range-based for)
    iteration_proxy_value<IteratorType> end() noexcept