gurator">T</a>&gt;&nbsp;callback)</pre>
<div class="block">Define an operation that accepts a context of a fired event.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>callback</code> - to call for the event notification</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>self</dd>
</dl>
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<h4>async</h4>
<pre><a href="../../../../../jakarta/enterprise/inject/spi/configurato