int bus_set_address_system_container(sd_bus *b, const char *machine);
int bus_remove_match_by_string(sd_bus *bus, const char *match, sd_bus_message_handler_t callback, void *userdata);
int bus_set_address_system_container(sd_bus *b, const char *machine);
int bus_remove_match_by_string(sd_bus *bus, const char *match, sd_bus_message_handler_t callback, void *userdata);