How can I shorten a test for a list being null or having no elements? : <p>I have this code:</p>

<pre><code>if (App.selectedPhrases == null || App.selectedPhrases.Count == 0)
</code></pre>

<p>I know that I can use App.selectedPhrases?.Count to return null if needed but how how can I shorten this test? I can't see a way to check for null or 0 without needing to use the || and have two tests.</p>
