endGeneratingDeviceOrientationNotifications()

Hi, I am trying to end generating device orientation notifications. After calling endGeneratingDeviceOrientationNotifications the status is still printing true. Xcode 9.3, iOS 11

if (UIDevice.current.isGeneratingDeviceOrientationNotifications == true){

UIDevice.current.endGeneratingDeviceOrientationNotifications()

print(UIDevice.current.isGeneratingDeviceOrientationNotifications) // Printing true

}