uture</a><span class="signature">&lt;<wbr><span class="type-parameter"><a href="dart-core/bool-class.html">bool</a></span>&gt;</span></span>
            <span class="name ">contains</span>
(<wbr><span class="parameter" id="contains-param-needle"><span class="type-annotation"><a href="dart-core/Object-class.html">Object</a></span> <span class="parameter-name">needle</span></span>)
      
    </section>
    <section class="desc markdown">
      <p>Returns whether <code>needle</code> occurs in the elements pro