><a href="dart-async/ZoneUnaryCallback.html">ZoneUnaryCallback</a><span class="signature">&lt;<wbr><span class="type-parameter">R</span>, <span class="type-parameter">T</span>&gt;</span></span>
                <span class="name ">RegisterUnaryCallbackHandler</span>
&lt;<wbr><span class="type-parameter">R</span>, <span class="type-parameter">T</span>&gt;(<wbr><span class="parameter" id="RegisterUnaryCallbackHandler-param-self"><span class="type-annotation"><a href="dart-async/Zone-class.html">Zone</a></span>