;:null}&quot;</span><span class="p">&gt;&gt;</span><span class="p" data-group-id="3139107262-2">)</span><span class="p">.</span></code></pre><p>Defaults are automatically added for fields missing in the JSON:</p><pre><code class="makeup erlang" translate="no"><span class="o">#</span><span class="ss">test</span><span class="p" data-group-id="4016169967-1">{</span><span class="w"> </span><span class="ss">a</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">1</span><