The highlight state of the cell.
- iOS 6.0+
- Mac Catalyst 13.0+
- tvOS 9.0+
This property manages the highlight state of the cell only. The default value of this property is
NO, which indicates that the cell is not highlighted.
You typically do not set the value of this property directly. Instead, the preferred way to select the cell and highlight it is to use the selection methods of the collection view object.