A TouchBarItem that will replace the "esc" button on the touch bar when set.
Setting to null restores the default "esc" button. Changing this value
immediately updates the escape item in the touch bar.
StaticTouchA typeof TouchBarButton reference to the TouchBarButton class.
StaticTouchA typeof TouchBarColorPicker reference to the TouchBarColorPicker class.
StaticTouchA typeof TouchBarGroup reference to the TouchBarGroup class.
StaticTouchA typeof TouchBarLabel reference to the TouchBarLabel class.
StaticTouchA typeof TouchBarOtherItemsProxy reference to the TouchBarOtherItemsProxy
class.
StaticTouchA typeof TouchBarPopover reference to the TouchBarPopover class.
StaticTouchA typeof TouchBarScrubber reference to the TouchBarScrubber class.
StaticTouchA typeof TouchBarSegmentedControl reference to the TouchBarSegmentedControl
class.
StaticTouchA typeof TouchBarSlider reference to the TouchBarSlider class.
StaticTouchA typeof TouchBarSpacer reference to the TouchBarSpacer class.
TouchBar