{"ast_node_type":"other","tokens":[{"end":98,"kind":"keyword","start":0,"text":"//"}]}
        // the hygiene data last to ensure that we encode any `SyntaxContext`s that might be used.
        // additional `SyntaxContext`s into the global `HygieneData`. Therefore, we need to encode
        let (syntax_contexts, expn_data, expn_hashes) = stat!("hygiene", || self.encode_hygiene());