lass="signature"><code>1</code></span>
          </div>
        </dd>
        <dt id="POSITION_UNAVAILABLE" class="constant">
          <span class="name "><a href="dart-html/PositionError/POSITION_UNAVAILABLE-constant.html">POSITION_UNAVAILABLE</a></span>
          <span class="signature">&#8594; const <a href="dart-core/int-class.html">int</a></span>
                  </dt>
        <dd>
          
                  
  <div>
            <span class="signature"><code>2</code></span>
          </div>
       