private static extern void FBAdViewBridgeOnError(int uniqueId, FBAdViewBridgeErrorExternalCallback callback);
private static extern void FBAdViewBridgeOnError(int uniqueId, FBAdViewBridgeErrorExternalCallback callback);
private static extern void FBAdViewBridgeOnError(int uniqueId, FBAdViewBridgeErrorExternalCallback callback);
private static extern void FBAdViewBridgeOnError(int uniqueId, FBAdViewBridgeErrorExternalCallback callback);