Plugin with id 'androidx.navigation.safeargs' not found : <p>When I try to add Safe Args (Android Navigation) to my app's as following</p>

<p>( using this guide : <a href="https://developer.android.com/topic/libraries/architecture/navigation/navigation-pass-data" rel="noreferrer">https://developer.android.com/topic/libraries/architecture/navigation/navigation-pass-data</a> ) :</p>

<pre><code>apply plugin: 'com.android.application'
apply plugin: 'androidx.navigation.safeargs'

apply plugin: 'kotlin-android'

apply plugin: 'kotlin-android-extensions'
apply plugin: 'com.google.gms.google-services'

android {...
</code></pre>

<p>I receive this error :</p>

<blockquote>
  <p><strong>Plugin with id 'androidx.navigation.safeargs' not found.</strong></p>
</blockquote>
