Declarations in extensions cannot override yet

[arunabhdas]

Getting the following error on line 31 of PresentationController.swift

Ambiguous use of 'add'

and the following error on line 122 of PresentationController.swift

Declarations in extensions cannot override yet

Function add is as below :

// MARK: - Content

extension PresentationController {

  open override func add(_ viewControllers: [UIViewController]) {
    for case let controller as SlideController in viewControllers  {
      slides.append(controller)
    }
    super.add(viewControllers)
  }

Using Swift 3.2 language version in Xcode 9.2

[vadymmarkov]

It should be fixed in Swift 4 release.