Swift 3 subclassing OperationQueue
<p>I have some problem with migration my code to Swift 3 (Xcode 8 beta 4).</p>

<pre><code>    import Foundation

    class MyOperationQueue: Foundation.OperationQueue {
    override func addOperation(_ op: Operation) {
    ....
    }
</code></pre>

<p>I'm receiving this two errors:
<a href="https://i.stack.imgur.com/zxVGD.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/zxVGD.png" alt="enter image description here"></a> </p>