static int bus_append_string(sd_bus_message *m, const char *field, const char *eq) {
        int r;

        r = sd_bus_message_append(m, "(sv)", field, "s", eq);
        if (r < 0)
                return bus_log_create_error(r);

        return 1;
}
static int bus_append_string(sd_bus_message *m, const char *field, const char *eq) {
        int r;

        r = sd_bus_message_append(m, "(sv)", field, "s", eq);
        if (r < 0)
                return bus_log_create_error(r);

        return 1;
}