title: Could not find method androidExtensions()
body: <p><strong>I want to use the features of kotlin @Parcelize,</strong> 
  I have <code>apply the plugin: 'kotlin-android-extensions'</code> on gradle, and I added </p>
  
  <pre><code>androidExtensions { 
      experimental = true 
  }
  </code></pre>
  
  <p>but errors continue to appear.this error message :</p>
  
  <pre><code>Error:(28, 0) Could not find method androidExtensions() for arguments [build_8di01fmxa4d18k9q0yy3fdd20$_run_closure2@27f46852] on project ':app' of type org.gradle.api.Project.
  &lt;a href="openFile:F:\BELAJAR\ANDROID\AndroidStudioProjects\KADE\app\build.gradle"&gt;Open File&lt;/a&gt;
  </code></pre>