title: PHAssetCollectionChangeRequest: addAssets() now accepts NSFastEnumeration. how to achieve this?
body: <p><img src="https://i.stack.imgur.com/Jngvk.png" alt="enter image description here"></p>
  
  <p>My Application tries to import an image from photos and adds to an album.</p>
  
  <p>But in latest swift changes. addAssets() accepts parameter as NSFastEnumeration. So I get an error as shown in the image.</p>
  
  <p>even the Apple API document has this same code: <a href="https://developer.apple.com/library/prerelease/ios/documentation/Photos/Reference/PHAssetChangeRequest_Class/index.html#//apple_ref/occ/instp/PHAssetChangeRequest/placeholderForCreatedAsset" rel="noreferrer">https://developer.apple.com/library/prerelease/ios/documentation/Photos/Reference/PHAssetChangeRequest_Class/index.html#//apple_ref/occ/instp/PHAssetChangeRequest/placeholderForCreatedAsset</a></p>
  
  <p>What is the alternative or how do I addAssets now?</p>