#endif
/** Add a callback fired on each newly created host */
static void on_creation_cb(const std::function<void(Host&)>& cb) { on_creation.connect(cb); }
/** Add a callback fired when any machine is turned on or off (called AFTER the change) */
#endif
/** Add a callback fired on each newly created host */
static void on_creation_cb(const std::function<void(Host&)>& cb) { on_creation.connect(cb); }
/** Add a callback fired when any machine is turned on or off (called AFTER the change) */