{"ast_node_type":"other","tokens":[{"end":47,"kind":"keyword","start":0,"text":"DefKind::OpaqueTy"}]}
            DefKind::OpaqueTy => "opaque type",
            DefKind::Ctor(CtorOf::Struct, CtorKind::Const) => "unit struct",
            DefKind::TyAlias => "type alias",