 subclass.
 
 <p><code>Cacheable(false)</code> means that the entity and its state must
 not be cached by the provider.</div>
<dl class="notes">
<dt>Since:</dt>
<dd>2.0</dd>
</dl>
</section>
<section class="summary">
<ul class="summary-list">
<!-- =========== ANNOTATION INTERFACE OPTIONAL MEMBER SUMMARY =========== -->
<li>
<section class="member-summary" id="annotation-interface-optional-element-summary">
<h2>Optional Element Summary</h2>
<div class="caption"><span>Optional Elements</span></div>
<div class