cols/ItemLayoutsValue.html">ItemLayoutsValue</a></code>s stored within the object.
This method will return the <code>defaultValue</code> for a value if none is set.</p>
<h2 id='note' class='heading'>Note</h2>

<p>When implementing your own custom layout, you should add an extension to <code>ItemLayouts</code>,
to provide easier access to your layout-specific <code><a href="../Protocols/ItemLayoutsValue.html">ItemLayoutsValue</a></code> type.</p>
<pre class="highlight swift"><code><span class="kd">extension<