   }
 
   @available(*, unavailable, renamed: "removeSubrange")
-  public mutating func removeRange(_ subRange: Range<Index>) {
+  public mutating func removeRange(_ subrange: Range<Index>) {
   }
 
   @available(*, unavailable, renamed: "append(contentsOf:)")

    S : Sequence where S.Iterator.Element == _Element
  >(_ elements: S)

  /// Replace the given `subRange` of elements with `newElements`.
  ///
  /// Invalidates all indices with respect to `self`.
  ///

  public mutating func replaceRange<
    C : Collection where C.Iterator.Element == Iterator.Element
  >(
    _ subrange: Range<Index>, with newElements: C
  ) {
    fatalError("unavailable function can't be called")
  }
