insert_iterator(Container& x, typename Container::iterator i);
insert_iterator& operator=(const typename Container::value_type& value);
insert_iterator& operator=(typename Container::value_type&& value);
insert_iterator& operator*();
insert_iterator& operator++();
insert_iterator& operator++(int);
template <class Container>
insert_iterator<Container> inserter(Container& x, typename Container::iterator i);