ut</a></li>
            <li><a href="polymer_app_layout/NodeValidatorBuilder-class.html">NodeValidatorBuilder</a></li>
            <li class="self-crumb">allowCustomElement</li>
        </ol>
        <div class="title-description">
            <h1 class="title">
                <div class="kind">method</div> allowCustomElement
            </h1>
            <!-- p class="subtitle">
                Allow custom elements with the specified tag name and specified attributes.
            </p -->
        </div>
 