110         pub fn lifetimes(&self) -> impl Iterator<Item = &LifetimeParam> [Lifetimes] {
117         pub fn lifetimes_mut(&mut self) -> impl Iterator<Item = &mut LifetimeParam> [LifetimesMut] {
124         pub fn type_params(&self) -> impl Iterator<Item = &TypeParam> [TypeParams] {
131         pub fn type_params_mut(&mut self) -> impl Iterator<Item = &mut TypeParam> [TypeParamsMut] {
138         pub fn const_params(&self) -> impl Iterator<Item = &ConstParam> [ConstParams] {
145 …     pub fn const_params_mut(&mut self) -> impl Iterator<Item = &mut ConstParam> [ConstParamsMut] {
190     type Item = &'a LifetimeParam;  typedef
192     fn next(&mut self) -> Option<Self::Item> {  in next()  argument
204     type Item = &'a mut LifetimeParam;  typedef
206     fn next(&mut self) -> Option<Self::Item> {  in next()  argument
218     type Item = &'a TypeParam;  typedef
220     fn next(&mut self) -> Option<Self::Item> {  in next()  argument
232     type Item = &'a mut TypeParam;  typedef
234     fn next(&mut self) -> Option<Self::Item> {  in next()  argument
246     type Item = &'a ConstParam;  typedef
248     fn next(&mut self) -> Option<Self::Item> {  in next()  argument
260     type Item = &'a mut ConstParam;  typedef
262     fn next(&mut self) -> Option<Self::Item> {  in next()  argument