Multiplexing the Future<> in Java
<p>I find myself about to write a class that <code>implements Future&lt;T&gt;</code> and stores, inside of itself, a <code>Collection&lt;Future&lt;T&gt;&gt;</code>, acting as an aggregate future for all of its contents.</p>

<p>I wonder: has anyone already done this in some open source library? A bit of googling didn't yield.</p>
