Machine* machine_new(Manager *manager, const char *name);
void machine_free(Machine *m);
-int machine_check_gc(Machine *m, bool drop_not_started);
+bool machine_check_gc(Machine *m, bool drop_not_started);
void machine_add_to_gc_queue(Machine *m);
int machine_start(Machine *m, sd_bus_message *properties, sd_bus_error *error);
int machine_stop(Machine *m);