an class="signature">&lt;<wbr><span class="type-parameter">R</span>&gt;</span></span>
            <span class="name ">registerCallback</span>
&lt;<wbr><span class="type-parameter">R</span>&gt;(<wbr><span class="parameter" id="registerCallback-param-callback"><span class="type-annotation">R</span> <span class="parameter-name">callback</span>()</span>)
      
    </section>
    <section class="desc markdown">
      <p>Registers the given callback in this zone.</p>
<p>When implementing an asynchronous primitiv