{"ast_node_type":"function","tokens":[{"end":92,"kind":"keyword","start":0,"text":"pub"}]}
    pub fn next_nll_region_var(&self, origin: NllRegionVariableOrigin) -> ty::Region<'tcx> {
    #[instrument(skip(self), level = "debug")]
        self.next_region_var(RegionVariableOrigin::Nll(origin))