void FinishHandler(object sender, AdFinishedEventArgs e)
{
OnAdFinished -= FinishHandler;
_executor.Post(() => { _showAdCallbacks?.finishCallback(e.result); });
}
void FinishHandler(ShowResult result)
{
Platform.m_Placeholder.onFinish -= FinishHandler;
_showOptions?.finishCallback(result);
}
