title: iOS8, Swift: fileURLWithPath - missing argument for parameter error
body: <p>I am trying to append subdirectory to documents directory using method:</p>
  
  <pre><code>class func fileURLWithPath(path: String) -&gt; NSURL?`
  </code></pre>
  
  <p>code:</p>
  
  <pre><code>let applicationDocumentsDirectory:String = NSSearchPathForDirectoriesInDomains(.DocumentDirectory, .UserDomainMask, true)[0] as NSString
  let storesDirectory:NSURL = NSURL.fileURLWithPath(applicationDocumentsDirectory).URLByAppendingPathComponent("Stores")
  </code></pre>
  
  <p>Getting error </p>
  
  <blockquote>
    <p>missing argument for parameter 'isDirectory' in call.</p>
  </blockquote>
  
  <p>I don't really get it, why compiler requires this parameter? It isn't mentioned in the interface?</p>
  
  <p>Thnanx in advance</p>