="kc">nil</span><span class="p">,</span>
                        <span class="nv">progress</span><span class="p">:</span> <span class="kt"><a href="../Classes/ImageDownloader.html">ImageDownloader</a></span><span class="o">.</span><span class="kt">ProgressHandler</span><span class="p">?</span> <span class="o">=</span> <span class="kc">nil</span><span class="p">,</span>
                        <span class="nv">progressQueue</span><span class="p">:</span> <span class="kt">DispatchQueue</span> <span class="o">