{"ast_node_type":"other","tokens":[{"end":100,"kind":"keyword","start":0,"text":"RegionName"}]}
                RegionName { name: ebr.name, source: RegionNameSource::NamedEarlyParamRegion(span) }
                let span = tcx.hir_span_if_local(def_id).unwrap_or(DUMMY_SP);
            }),