{"ast_node_type":"import","tokens":[{"end":92,"kind":"keyword","start":0,"text":"//"}]}
        // We use `parse_pat_allow_top_alt` regardless of whether we actually want top-level
    ) -> PResult<'a, (P<Pat>, bool)> {
        // or-patterns so that we can detect when a user tries to use it. This allows us to print a