e/inject/spi/Bean.html" title="interface in jakarta.enterprise.inject.spi"><code>Bean</code></a> or
 <a href="../../../../jakarta/enterprise/context/spi/Contextual.html" title="interface in jakarta.enterprise.context.spi"><code>Contextual</code></a>. It is recommended that the string contain the package name of the class
 that implements <code>Bean</code> or <code>Contextual</code>.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>a unique identifier for the <a href="../../../../jakarta/ent