{"ast_node_type":"other","tokens":[{"end":92,"kind":"keyword","start":0,"text":"//"}]}
            // the data for the decoder so holding onto the `MemDecoder` too would make us a
            // it as we do elsewhere in the compiler using `MetadataDecoder::split_at`. But we own
            // self-referential struct which is downright goofy because `MetadataBlob` is already