761         let prev = self.get_neighbor_raw(Direction::Prev);  in remove_current()
762         let next = self.get_neighbor_raw(Direction::Next);  in remove_current()
794         self.remove_neighbor(Direction::Prev)  in remove_prev()
799         self.remove_neighbor(Direction::Next)  in remove_next()
802     fn remove_neighbor(&mut self, direction: Direction) -> Option<RBTreeNode<K, V>> {  in remove_neighbor()
820         self.mv(Direction::Prev)  in move_prev()
825         self.mv(Direction::Next)  in move_next()
828     fn mv(self, direction: Direction) -> Option<Self> {  in mv()
839         self.peek(Direction::Prev)  in peek_prev()
844         self.peek(Direction::Next)  in peek_next()
847     fn peek(&self, direction: Direction) -> Option<(&K, &V)> {  in peek()
858         self.peek_mut(Direction::Prev)  in peek_prev_mut()
863         self.peek_mut(Direction::Next)  in peek_next_mut()
866     fn peek_mut(&mut self, direction: Direction) -> Option<(&K, &mut V)> {  in peek_mut()
875     fn get_neighbor_raw(&self, direction: Direction) -> Option<NonNull<bindings::rb_node>> {  in get_neighbor_raw()
879                 Direction::Prev => bindings::rb_prev(self.current.as_ptr()),  in get_neighbor_raw()
880                 Direction::Next => bindings::rb_next(self.current.as_ptr()),  in get_neighbor_raw()
925 enum Direction {  enum