{"ast_node_type":"struct","tokens":[{"end":97,"kind":"keyword","start":0,"text":"//"}]}
            // self-referential struct which is downright goofy because `MetadataBlob` is already
            // the data for the decoder so holding onto the `MemDecoder` too would make us a
            // self-referential. Probably `MemDecoder` should contain an `OwnedSlice`, but that