e</a>&lt;? super <a href="Graph.html" title="type parameter in Graph">T</a>,<wbr>?&gt;&nbsp;attribute)</span></div>
<div class="block">Determine if there is an existing attribute node for the given
 attribute.</div>
<dl class="notes">
<dt>Parameters:</dt>
<dd><code>attribute</code> - attribute</dd>
<dt>Returns:</dt>
<dd>true if there is an existing attribute node</dd>
<dt>Since:</dt>
<dd>3.2</dd>
</dl>
</section>
</li>
<li>
<section class="detail" id="getAttributeNode(java.lang.String)">
<h3>getAttributeNod