{"ast_node_type":"other","tokens":[{"end":83,"kind":"keyword","start":0,"text":"//"}]}
        // MacroCallId is reserved anyways so we can do bit tagging here just fine.
        // FIXME: The None case needs to encode the context crate id. We can encode that as the MSB of
        // The bigger issue is that this will cause interning to now create completely separate chains