title: How to read file comment field
body: <p>In OS X Finder there is 'Comment' file property. It can be checked in finder by adding 'Comment' column or edited/checked after right clicking on file or folder and selecting 'Get info'.
  <p>
  How to read this value in swift or objective-c?
  <p>
  I checked already NSURL and none of them seems to be the right ones</p>