 <li class="nav-group-task">
                <a href="../../../Protocols/Authenticator.html">Authenticator</a>
              </li>
              <li class="nav-group-task">
                <a href="../../../Protocols/CallOperation.html">CallOperation</a>
              </li>
              <li class="nav-group-task">
                <a href="../../../Protocols/Cancellable.html">Cancellable</a>
              </li>
              <li class="nav-group-task">
                <a href="../../../Protocols/DownloadOpe