atory when creating an instance of the model.</li>
<li><strong>default: any</strong>, default value of the collection. It needs to have the type defined in <strong>type</strong> property.</li>
</ul>
<h2><a class="anchor" aria-hidden="true" id="edit-a-method"></a><a href="#edit-a-method" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1