title: How can I implement "copy & pasting" to Finder using NSPasteboard?
body: <p>I implemented copy and pasting using NSPasteboard and FilePromise within my app. Now I'd like to implement the following workflow.</p>
  <ol>
  <li>Copy an item in my app.</li>
  </ol>
  <pre><code>let provider = NSFilePromiseProvider(fileType: kUTTypeVideo as String, delegate: self)
  </code></pre>
  <ol start="2">
  <li>Open Finder</li>
  <li>Paste the item to Finder using the mouse context menu.</li>
  </ol>
  <p>I'm stuck at the step 3. Finder doesn't recognize the items I added to the pasteboard so there's no &quot;Paste Item' menu in the context menu.</p>
  <p>Please note that this is not a drag-and-drop. With drag-and-drop, the following delegate is called just fine.</p>
  <pre><code>func filePromiseProvider(_ filePromiseProvider: NSFilePromiseProvider, writePromiseTo url: URL, completionHandler: @escaping (Error?) -&gt; Void) {
  </code></pre>
  <p>Could someone give me a pointer?</p>