{"ast_node_type":"other","tokens":[{"end":61,"kind":"keyword","start":0,"text":"(Default)"}]}
    (Default)        => { exp!(@kw, Default,    KwDefault) };
    (Crate)          => { exp!(@kw, Crate,      KwCrate) };
    (Dyn)            => { exp!(@kw, Dyn,        KwDyn) };