n java.lang" class="external-link">String</a>&gt;&nbsp;onStart)</code></div>
<div class="col-last even-row-color">
<div class="block">A consumer that will be invoked first when the <a href="../ServiceInvocation.html#execute()"><code>execute()</code></a> method gets invoked.</div>
</div>
<div class="col-first odd-row-color"><code><a href="../ServiceInvocation.html" title="class in com.dlsc.gemsfx.util">ServiceInvocation</a>&lt;<a href="../ServiceInvocation.html" title="type parameter in ServiceInvocation">T<