Notifies the control that the intrinsic content size for its cell is no longer valid.
- macOS 10.7+
The cell whose intrinsic content size has changed.
Controls determine their intrinsic content size based on the cell size for a given bounds returned by their cell. When the content of the cell changes in a way that would change the return value of
cell, the cell needs to call this method to notify its control that its intrinsic size is no longer valid.