Function uikit_sys::CFNotificationCenterAddObserver

pub unsafe extern "C" fn CFNotificationCenterAddObserver(
    center: CFNotificationCenterRef, 
    observer: *const c_void, 
    callBack: CFNotificationCallback, 
    name: CFStringRef, 
    object: *const c_void, 
    suspensionBehavior: CFNotificationSuspensionBehavior
)