n><span class="kt">String</span> <span class="p">:</span> <span class="kt">Any</span><span class="p">?],</span> <span class="nv">setNilToNull</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">rootKey</span><span class="p">:</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="o">-&gt;</span> <span class="k