ss="name ">has</span>
(<wbr><ol class="parameter-list"><li><span class="parameter" id="has-param-cacheName"><span class="type-annotation"><a href="../../dart-core/String-class.html">String</a></span> <span class="parameter-name">cacheName</span></span></li>
</ol>)
      
    </section>
    
    <section class="summary source-code" id="source">
      <h2><span>Implementation</span></h2>
      <pre class="language-dart"><code class="language-dart">Future has(String cacheName) =&gt;
    promiseToFuture(JS(&quo