{"ast_node_type":"other","tokens":[{"end":96,"kind":"keyword","start":0,"text":"//"}]}
                // its parameter unless a lifetime argument is provided explicitly. That is, for
                // are often omitted, ignore them for the purposes of matching the argument with
                // `struct S<'a, 'b, T>`, match `S::<$0>` to `T` and `S::<'a, $0, _>` to `'b`.