{"ast_node_type":"other","tokens":[{"end":96,"kind":"keyword","start":0,"text":"///"}]}
    /// Cargo builds only on-disk files). We could and probably should add diagnostics for that.
    /// going out of sync with what the build system sees (since we resolve using VFS state, but
    fn export_proc_macro(&mut self, def: ProcMacroDef, ast_id: AstId<ast::Fn>, fn_id: FunctionId) {