Method begin

Source/Utils/json.hpp:3941–3944

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