{"ast_node_type":"other","tokens":[{"end":93,"kind":"keyword","start":0,"text":"//"}]}
        // the incremental cache. If this causes us to deserialize a `Span`, then we may load
        // process of encoding other items (e.g. `optimized_mir`) may cause us to load data from
        // additional `SyntaxContext`s into the global `HygieneData`. Therefore, we need to encode