iPhone enumerateGroupsWithTypes finishing selector
<p>I'm using </p>

<pre><code>[assetsLibrary enumerateGroupsWithTypes:groupTypes usingBlock:listGroupBlock failureBlock:failureBlock];
</code></pre>

<p>to enumerate Photo Albums.</p>

<p>The enumerator is acting in an "asynchronous" way, in other words the methods returns before enumerating all items.</p>

<p>How can I know when the enumeration is finished?</p>

<p>I'm populating a NSMutableArray with the groups, and would to call <code>[myTableView reloadData]</code> after enumeration is finished.</p>
