title: 'mat-datepicker-actions' is not a known element - best solution required
body: <p>I have imported <code>MatDatepickerModule</code> and getting <code>mat-datepicker-actions</code> are not known. I guess there is some other module that needs to import. Here is code snippet:</p>
  <pre><code>&lt;mat-form-field appearance=&quot;fill&quot; class=&quot;example-form-field&quot;&gt;
     &lt;mat-label&gt;Choose a date&lt;/mat-label&gt;
     &lt;input matInput [matDatepicker]=&quot;datepicker&quot;&gt;
     &lt;mat-datepicker-toggle matSuffix [for]=&quot;datepicker&quot;&gt;&lt;/mat-datepicker-toggle&gt;
     &lt;mat-datepicker #datepicker&gt;
       &lt;mat-datepicker-actions&gt;
         &lt;button mat-button matDatepickerCancel&gt;Cancel&lt;/button&gt;
         &lt;button mat-raised-button color=&quot;primary&quot; matDatepickerApply&gt;Apply&lt;/button&gt;
       &lt;/mat-datepicker-actions&gt;
     &lt;/mat-datepicker&gt;
   &lt;/mat-form-field&gt;
  </code></pre>
  <blockquote>
  <p><strong>Note:</strong> anyone provides solution within the <code>angular-material</code> library, not third party (normally has too much size). I'll be thankful.</p>
  </blockquote>