{"ast_node_type":"other","tokens":[{"end":89,"kind":"keyword","start":0,"text":"self.universal_regions().defining_ty.upvar_tys().iter().position(|upvar_ty|"}]}
            self.universal_regions().defining_ty.upvar_tys().iter().position(|upvar_ty| {
        let upvar_index =
                debug!("get_upvar_index_for_region: upvar_ty={upvar_ty:?}");