n> <span class="nc">AddressFields</span><span class="p">:</span>
<span class="w">    </span><span class="sd">&#39;&#39;&#39;</span>
<span class="sd">    A list of address fields.</span>
<span class="sd">    &#39;&#39;&#39;</span>
    <span class="n">fields</span><span class="p">:</span> <span class="n">typing</span><span class="o">.</span><span class="n">List</span><span class="p">[</span><span class="n">AddressField</span><span class="p">]</span>

    <span class="k">def</span> <span class="nf">to_json</sp