title: Get all filesystem tags
body: <p>Since OSX Mavericks supports file tags. Is there any API to access these programmatically? How can I get a list of all system tags? And manipulate them?</p>
  
  <p>I tried already:</p>
  
  <ul>
  <li>NSFileManager class</li>
  <li>File System Programming Guide</li>
  <li>File Metadata Search Programming Guide</li>
  </ul>
  
  <p>yet none of those mention the existance of tags.</p>