java.lang" class="externalLink">Class</a>&lt;?&gt;&gt;</span>&nbsp;<span class="memberName">register</span>&#8203;(<span class="arguments"><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a>&nbsp;callback)</span></div>
<div class="block">Register an asynchronous processing lifecycle callback instance to receive lifecycle events for the asynchronous
 response based on the implemented callback interf