如何获取用户Mac的图标？

Using Objective-C and Cocoa, does anyone know how to get the icon for a user's computer (the one that shows under "Devices" and "Network" in Finder)? Not the harddisk icon, the actual one for a user's device. It ranges from a MacBook icon to the Mac Pro icon to a Windows blue screen of death monitor icon.Using Objective-C and Cocoa, does anyone know h