            <pre class="highlight swift"><code><span class="kd">public</span> <span class="nf">init</span><span class="p">(</span><span class="nv">callbackQueue</span><span class="p">:</span> <span class="kt">DispatchQueue</span> <span class="o">=</span> <span class="o">.</span><span class="n">main</span><span class="p">,</span> <span class="nv">completion</span><span class="p">:</span> <span class="kd">@escaping</span> <span class="kt"><a href="../Classes/OpenGraphWorker.html#/s:21GetStreamActivityFeed15Op