{"ast_node_type":"other","tokens":[{"end":30,"kind":"keyword","start":0,"text":"*"}]}
     * - want `Vec<i32>: Copy`
     * For example, if you have a chain of constraints like:
     * - because `Option<Vec<i32>>: Copy` needs `Vec<i32>: Copy` because `impl <T: Copy> Copy for Option<T>`