{"ast_node_type":"other","tokens":[{"end":58,"kind":"keyword","start":0,"text":"(Enum)"}]}
    (Enum)           => { exp!(@kw, Enum,       KwEnum) };
    (Else)           => { exp!(@kw, Else,       KwElse) };
    (Extern)         => { exp!(@kw, Extern,     KwExtern) };