{"ast_node_type":"other","tokens":[{"end":69,"kind":"keyword","start":0,"text":"(Noreturn)"}]}
    (Noreturn)       => { exp!(@sym, noreturn,        SymNoreturn) };
    (Nomem)          => { exp!(@sym, nomem,           SymNomem) };
    (Nostack)        => { exp!(@sym, nostack,         SymNostack) };