 extension NSSet {
   // - (instancetype)initWithObjects:(id)firstObj, ...
   convenience init(objects elements: AnyObject...) {
-    let x = _extractOrCopyToNativeArrayBuffer(elements.buffer)
+    let x = _extractOrCopyToNativeArrayBuffer(elements._buffer)
     // - (instancetype)initWithObjects:(const id [])objects count:(NSUInteger)cnt;
     // Imported as:
     // @objc(initWithObjects:count:)

extension NSOrderedSet {
  // - (instancetype)initWithObjects:(id)firstObj, ...
  convenience init(objects elements: AnyObject...) {
    let x = _extractOrCopyToNativeArrayBuffer(elements.buffer)
    // - (instancetype)initWithObjects:(const id [])objects count:(NSUInteger)cnt;
    // Imported as:
    // @objc(initWithObjects:count:)

  // Overlay: - (instancetype)initWithObjects:(id)firstObj, ...
  convenience init(objects elements: AnyObject...) {
    // - (instancetype)initWithObjects:(const id [])objects count:(NSUInteger)cnt;
    let x = _extractOrCopyToNativeArrayBuffer(elements._buffer)
    // Use Imported:
    // @objc(initWithObjects:count:)
    //    init(withObjects objects: CConstPointer<AnyObject?>,
