// Close flex ads.
public static bool closeAd(string placementID)
{
#if (!VUNGLE_AD_OFF)
#if UNITY_EDITOR
return(false);
#endif
#if UNITY_IPHONE
return(VungleBinding.closeAd(placementID));
#elif UNITY_ANDROID
return(VungleAndroid.closeAd(placementID));
#elif UNITY_WSA_10_0 || UNITY_WINRT_8_1 || UNITY_METRO
return(false);
#endif
#endif
}