Returns the array of views in the specified gravity area in the stack view.
- macOS 10.9+
The gravity area whose view array you want to get. Valid values are those in the
NSStackenumeration, according to the stack view’s layout direction..
The array of views in a specified gravity area.
The returned array contains all of the views in the specified gravity area of the stack view, regardless of whether they are attached. The index position of each view in the array matches the view ordering within the gravity area. A detached view’s index position is its gravity area position when attached.