>
<dd><code>U</code> - instance type</dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>callback</code> - a <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/util/function/Function.html?is-external=true" title="class or interface in java.util.function" class="externalLink"><code>Function</code></a> defining the callback to set</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>self</dd>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../Produc