 ProgressBar. </div><div class="qm-html-paragraph">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-paragraph">The other available options differ for each of the two prototypes. See their constructors for details. </div