{"ast_node_type":"other","tokens":[{"end":26,"kind":"keyword","start":0,"text":"pub"}]}
    pub sub: Region<'tcx>,
    // If `kind` is `VarSubVar` or `VarSubReg`, this must be a `ReVar`.
    // If `kind` is `VarSubVar` or `RegSubVar`, this must be a `ReVar`.