>(<span class="hljs-params">progress</span>) </span>{
  <span class="hljs-comment">// progress will be a value between 0 and 1</span>
})</code></pre></div></div></div> </div></div></div><div class="qm-docs-topic"><div class="qm-docs-anchor" id="api"><div class="qm-docs-topic-header qm-header-font">Api<a class="qm-docs-anchor-icon" href="#api"></a></div></div><div class="qm-docs-topic-body"><div class="qm-html-paragraph"><a href="/docs/transition/changelog">Change Log</a> </div><div class="qm-html-paragraph"