 <dd class="inherited">
          Close the target consumer. <a href="dart-io/Socket/close.html">[...]</a>
          <div class="features">inherited</div>
</dd>
        <dt id="contains" class="callable inherited">
          <span class="name"><a href="dart-async/Stream/contains.html">contains</a></span><span class="signature">(<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</spa