title: Warning about ignored promise in Bootstrap Vue @ok handler
body: <p>My VueJS app uses Bootstrap Vue. The following shows a modal which is basically working fine.</p>
  <pre class="lang-js prettyprint-override"><code>b-modal(
      :id=&quot;`delete-modal-${data.index}`&quot;
      centered hide-header
      :ok-title=&quot;$t('deletion_confirm')&quot; :cancel-title=&quot;$t('deletion_abort')&quot;
      @ok=&quot;deleteDocument(data.item)&quot;
  ) {{ $t('deletion_question', {filename: data.item.name}) }}
  </code></pre>
  <p>However, my IDE (WebStorm) shows a warning on the <code>deleteDocument</code> method:</p>
  <p><code>Promise returned from deleteDocument is ignored</code></p>
  <p><code>deleteDocument()</code> is an async/await method which sends a <code>DELETE</code> request to the backend like this:</p>
  <pre class="lang-js prettyprint-override"><code>async deleteDocument(item) {
    await ApiService.deleteDocument(item);
    // ...
  }
  </code></pre>
  <p>How could I fix that warning?</p>