aces:</dt>
<dd><code>java.io.Serializable</code></dd>
</dl>
<dl>
<dt>Direct Known Subclasses:</dt>
<dd><code><a href="KeywordOrIdentifier.Identifier.html" title="class in hydra.ext.org.apache.tinkerpop.gremlin">KeywordOrIdentifier.Identifier</a></code>, <code><a href="KeywordOrIdentifier.Keyword.html" title="class in hydra.ext.org.apache.tinkerpop.gremlin">KeywordOrIdentifier.Keyword</a></code></dd>
</dl>
<hr>
<pre>public abstract class <span class="typeNameLabel">KeywordOrIdentifier</span>
extends java.lan