// 'fn index(&self, index: Idx) -> &Self::Output'
fn index(&self, index: Idx) -> &Self::Output;
}
// @has issue_20727_4/trait.IndexMut.html
pub trait IndexMut<Idx: ?Sized>: Index<Idx> {
// 'fn index(&self, index: Idx) -> &Self::Output'
fn index(&self, index: Idx) -> &Self::Output;
}
// @has issue_20727_4/trait.IndexMut.html
pub trait IndexMut<Idx: ?Sized>: Index<Idx> {