int bus_open_transport(BusTransport transport, const char *host, bool user, sd_bus **bus);
// UNNEEDED int bus_open_transport_systemd(BusTransport transport, const char *host, bool user, sd_bus **bus);
int bus_open_transport(BusTransport transport, const char *host, bool user, sd_bus **bus);
// UNNEEDED int bus_open_transport_systemd(BusTransport transport, const char *host, bool user, sd_bus **bus);