used internally,  <code class="qm-code-highlight-code qm-code-font">ProgressBarV1</code>  and  <code class="qm-code-highlight-code qm-code-font">ProgressBarV2</code>.
 By default, this will create a  <code class="qm-code-highlight-code qm-code-font">ProgressBarV1</code>. If passing <code class="qm-code-highlight-code qm-code-font">featureFlags.useUpdatedClass: true</code>  in the options, a  <code class="qm-code-highlight-code qm-code-font">ProgressBarV2</code>  will be created. </div><div class="qm-html-pa