{"ast_node_type":"other","tokens":[{"end":56,"kind":"keyword","start":0,"text":"self.region_rels.lub_param_regions(a,"}]}
                self.region_rels.lub_param_regions(a, b)
            (ReEarlyParam(_) | ReLateParam(_), ReEarlyParam(_) | ReLateParam(_)) => {
            }