hPayload</span> <span class="nv">payload</span><span class="p">:</span> <span class="kt"><a href="../Structs/ChallengeListPayload.html">ChallengeListPayload</a></span><span class="p">,</span>
  <span class="nv">success</span><span class="p">:</span> <span class="kd">@escaping</span> <span class="p">(</span><span class="kt"><a href="../Protocols/ChallengeList.html">ChallengeList</a></span><span class="p">)</span> <span class="o">-&gt;</span> <span class="p">(),</span>
  <span class="nv">failure</span><span c