{"ast_node_type":"import","tokens":[{"end":85,"kind":"keyword","start":0,"text":"//"}]}
        // from. We use `TAG_VALID_SPAN_FOREIGN` to indicate that a `CrateNum` should
        // deserialized, the deserializer will need to know which crate it originally came
        // be deserialized after the rest of the span data, which tells the deserializer