gt;</span> <span class="kt">T</span><span class="p">?</span> <span class="k">where</span> <span class="kt">T</span> <span class="p">:</span> <span class="kt">UIViewController</span></code></pre>

                        </div>
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                    </section>
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                <li class="item">
                  <div>
                    <code>
                    <a name="/s:So22UINavigationControllerC21GetStreamActivityFeedE8findLast0