How do I get the parent tid of a taxonomy term in Drupal 8
<p>I used the following to get the parent of a taxonomy term in drupal 8:</p>

<pre><code>$parent = \Drupal::entityTypeManager()-&gt;getStorage('taxonomy_term')-&gt;loadParents($termId);

$parent = reset($parent);
</code></pre>

<p>Now that I have the parent how do I get the parent tid from that?</p>