<p class="aside-title">Swift</p>
                          <pre class="highlight swift"><code><span class="kd">public</span> <span class="kd">func</span> <span class="nf">previousViewController</span><span class="p">()</span> <span class="o">-&gt;</span> <span class="kt">UIViewController</span><span class="p">?</span></code></pre>

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