title: Xamarin.Mac dock icon does not accept drag and drop files
body: <p>My application does not accept drag and drop files on the Dock icons like other applications.</p>
  <p><a href="https://i.stack.imgur.com/OUBl1.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/OUBl1.png" alt="enter image description here" /></a></p>
  <p>For example, the dock icon in Visual Studio for Mac accepts the file, but when I build and run the default project, it does not accept the drag and drop of the dock icon.</p>
  <p>Perhaps I need to configure something in Xcode, but how can I do that?</p>
  <p>Also, what kind of code should I write to receive the file path dragged and dropped to the dock icon in <code>ViewController</code>?</p>