title: Swift 2 to Swift 3
body: <p>In Swift 2 I was able to write this statement:</p>
  
  <pre><code>var reachability = SCNetworkReachabilityCreateWithName(kCFAllocatorDefault, "www.apple.com").takeRetainedValue()
  </code></pre>
  
  <p>In Swift 3 now it says that SCNetworkReachability? has no member  takeRetainedValue().</p>