{"ast_node_type":"other","tokens":[{"end":79,"kind":"keyword","start":0,"text":"AdtId::UnionId(_)"}]}
                        AdtId::UnionId(_) => not_supported!("unsizing unions"),
                        AdtId::StructId(s) => s,
                        AdtId::EnumId(_) => not_supported!("unsizing enums"),