What is the most recent correct syntax to initialize the Google Mobile Ads SDK in the App Delegate file? : <p>All of a sudden, I get a warning on the code used to initialize the Google Mobile Ads SDK. (It had been working for weeks before with no warning, but now it seems there's a new way to write the code.)</p>

<p>This is the code I have:</p>

<pre><code>GADMobileAds.configure(withApplicationID: "ca-app-pub-################~##########")
</code></pre>

<p>But it gives me this warning: 'configure(withApplicationID:)' is deprecated: Use [GADMobileAds.sharedInstance startWithCompletionHandler:]</p>

<p>I've tried to rewrite it like this (with and without the square brackets):</p>

<pre><code>GADMobileAds.sharedInstance startWithCompletionHandler: "ca-app-pub-################~##########"
</code></pre>

<p>But it just gives me an error that it expected a ;.</p>

<p>How should I write this? Thank you!</p>

<p><img src="https://i.imgur.com/YLTqdPc.png" alt="files from Pods folder in Xcode show a modified status"></p>
