span> <span class="kt">String</span><span class="p">?</span> <span class="o">=</span> <span class="kc">nil</span><span class="p">,</span> <span class="nv">limit</span><span class="p">:</span> <span class="kt">Int</span> <span class="o">=</span> <span class="mi">20</span><span class="p">,</span> <span class="nv">isReversed</span><span class="p">:</span> <span class="kt">Bool</span> <span class="o">=</span> <span class="kc">false</span><span class="p">,</span> <span class="nv">completionHandler</span><span cl