an><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 class="p">:</span> <span class="kd">@escaping</span> <span class="kt">TwilioVerifyErrorBlock</span><span class="p">)</span></code></pre>

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