This method displays a UI to switch to (or launch) a different task
This method creates a shortcut on a desktop or homescreen that opens in
the our application.
| aTitle | the user-friendly name of the shortcut. |
| aURI | the URI to open. |
| aIconData | a base64-encoded data: URI representation of the shortcut's icon, as accepted by the favicon decoder. |
| aIntent | obsolete and ignored, but remains for backward compatibility; pass an empty string |