title: How do you use AVCaptureStillImageOutput, captureStillImageAsynchronouslyFromConnection in particular?
body: <p>How do you setup the completion handler for:</p>
  
  <p>captureStillImageAsynchronouslyFromConnection:completionHandler:</p>
  
  <p>for AVCaptureStillImageOutput?</p>
  
  <ul>
  <li>(void)captureDelegate:(CMSampleBufferRef)buffer error:(NSError *)error;</li>
  </ul>
  
  <p>?</p>