s="returntype"><a href="dart-async/Future-class.html">Future</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 ">moveNext</span>
(<wbr>)
      
    </section>
    <section class="desc markdown">
      <p>Wait for the next stream value to be available.</p>
<p>Returns a future which will complete with either <code>true</code> or <code>false</code>.
Completing with <code>true</code> means that ano