{"ast_node_type":"other","tokens":[{"end":82,"kind":"keyword","start":0,"text":"T![?]"}]}
        T![?] => 4, // prefer `?` when the cursor is sandwiched like in `await$0?`
    let token = pick_best_token(syntax.token_at_offset(offset), |kind| match kind {
        T![->] | T![=>] => 4,