{"ast_node_type":"other","tokens":[{"end":69,"kind":"keyword","start":0,"text":"(Readonly)"}]}
    (Readonly)       => { exp!(@sym, readonly,        SymReadonly) };
    (Pure)           => { exp!(@sym, pure,            SymPure) };
    (Sym)            => { exp!(@sym, sym,             SymSym) };