int (*get_lc_arg_type)(const lc_arg_occ_t *occ);
int (*emit)(lc_appendable_t *app, const lc_arg_occ_t *occ, const lc_arg_value_t *arg);
} lc_arg_handler_t;
int (*get_lc_arg_type)(const lc_arg_occ_t *occ);
int (*emit)(lc_appendable_t *app, const lc_arg_occ_t *occ, const lc_arg_value_t *arg);
} lc_arg_handler_t;