itle">Swift</p>
                          <pre class="highlight swift"><code><span class="kd">func</span> <span class="nf">updateChallenge</span><span class="p">(</span>
  <span class="n">withPayload</span> <span class="nv">payload</span><span class="p">:</span> <span class="kt"><a href="../Protocols/UpdateChallengePayload.html">UpdateChallengePayload</a></span><span class="p">,</span>
  <span class="nv">success</span><span class="p">:</span> <span class="kd">@escaping</span> <span class="kt">EmptySuccessBl