Unsubscribes from the control’s events and, depending on the parameter, also disposes of the control and removes the link to the control.
true to only unsubscribe from events, false to also dispose of the control and remove the link to the control.
This method supports the internal infrastructure. You do not need to call this method manually in most cases.
You can override this method in ActionContainerViewItem descendants to dispose of custom recourses.