{"ast_node_type":"other","tokens":[{"end":63,"kind":"keyword","start":0,"text":"self.next_region_var(RegionVariableOrigin::Nll(origin))"}]}
        self.next_region_var(RegionVariableOrigin::Nll(origin))
    pub fn next_nll_region_var(&self, origin: NllRegionVariableOrigin) -> ty::Region<'tcx> {
    }