{"ast_node_type":"impl","tokens":[{"end":95,"kind":"keyword","start":0,"text":"//"}]}
            // type error instead of a missing impl error if not. This only checks for `Deref`,
            // that it implements `Deref` before assuming it's a smart pointer, to get a normal
            // not `DerefPure`: we require that too, but we want a trait error if it's missing.