remember
fun rememberBannerAd(activity: Any?, adUnitId: String = AdUnitId.BANNER_DEFAULT, adSize: AdSize = AdSize.FULL_BANNER, onLoad: () -> Unit = {}, onFailure: (Exception) -> Unit = {}, onDismissed: () -> Unit = {}, onShown: () -> Unit = {}, onImpression: () -> Unit = {}, onClick: () -> Unit = {}): MutableState<BannerAdHandler>