{"ast_node_type":"other","tokens":[{"end":58,"kind":"keyword","start":0,"text":".chain((0..rest_count).map(|_|"}]}
            .chain((0..rest_count).map(|_| rest_gcc_unit))
            .flat_map(|option_reg| option_reg.map(|reg| reg.gcc_type(cx)))
            .collect();