childViewControllerForTouchBar
The child view controller that the system uses to display content in the Touch Bar.
Declaration
var childViewControllerForTouchBar: UIViewController? { get }Discussion
Override this property to have the system use the touchBar object from a child view controller instead of the current view controller. If childViewControllerForTouchBar is nil, the system uses the current view controller’s touchBar object.
The default value is nil.