{"ast_node_type":"other","tokens":[{"end":67,"kind":"keyword","start":0,"text":"//"}]}
        // - `Some(None)`: Our target supports tokens and has none.
        // - `None`: Our target doesn't support tokens at all (e.g. `NtIdent`).
        // - `Some(Some(_))`: Our target already has tokens set (e.g. we've