="nav-group-task">
                <a href="../Extensions/Completion.html">Completion</a>
              </li>
              <li class="nav-group-task">
                <a href="../Extensions/Future.html">Future</a>
              </li>
              <li class="nav-group-task">
                <a href="../Extensions/FutureResult.html">FutureResult</a>
              </li>
              <li class="nav-group-task">
                <a href="../Extensions/NSQualityOfService.html">NSQualityOfService</a>
           