{"ast_node_type":"other","tokens":[{"end":71,"kind":"keyword","start":0,"text":"self.infcx.next_nll_region_var(origin,"}]}
            self.infcx.next_nll_region_var(origin, || region_ctxt_fn())
        fold_regions(self.infcx.tcx, value, |_region, _depth| {
        })