260   std::pair<iterator, bool> insert(const value_type &x) {  in insert()  function
263   std::pair<iterator, bool> insert(value_type &&x) {  in insert()  function
271   iterator insert(const_iterator position, const value_type &x) {  in insert()  function
276   iterator insert(const_iterator position, value_type &&x) {  in insert()  function
291   void insert(InputIterator b, InputIterator e) {  in insert()  function
294   void insert(std::initializer_list<init_type> init) {  in insert()  function
297   insert_return_type insert(node_type &&node) {  in insert()  function
309   iterator insert(const_iterator hint, node_type &&node) {  in insert()  function
565   iterator insert(const value_type &x) { return this->tree_.insert_multi(x); }  in insert()  function
566   iterator insert(value_type &&x) {  in insert()  function
569   iterator insert(const_iterator position, const value_type &x) {  in insert()  function
572   iterator insert(const_iterator position, value_type &&x) {  in insert()  function
576   void insert(InputIterator b, InputIterator e) {  in insert()  function
579   void insert(std::initializer_list<init_type> init) {  in insert()  function
591   iterator insert(node_type &&node) {  in insert()  function
599   iterator insert(const_iterator hint, node_type &&node) {  in insert()  function