Sets the icon for applications that are launched with this context.
Window Managers can use this information when displaying startup notification.
See also gdk.app_launch_context.AppLaunchContext.setIconName.
a #GIcon, or null
Sets the icon for applications that are launched with this context.
Window Managers can use this information when displaying startup notification.
See also gdk.app_launch_context.AppLaunchContext.setIconName.