     internal var iterator: _HashTable.Iterator
 
     @inlinable
+    @inline(__always)
     init(_ base: __owned _NativeSet) {
       self.base = base
       self.iterator = base.hashTable.makeIterator()


extension _NativeSet.Iterator: IteratorProtocol {
  @inlinable
  internal mutating func next() -> Element? {
    guard let index = iterator.next() else { return nil }
    return base.uncheckedElement(at: index)

  }

  @inlinable
  @inline(__always)
  internal __consuming func makeIterator() -> Iterator {
    return Iterator(self)
  }
