Usage of private access modifier in Swift 2

private-fileprivate-swift2.swift

//
// In *Swift 2* this works cause `private` means
// **inside this file**
//

//
// MARK: - A Class  
//

internal class FilterView: UIView
{
	/// Elements returned after apply filter
	@IBOutlet private weak var labelQuantity: UILabel!

	...
}

//
// MARK: - Implements Protocol 
//

extension FilterView: SomeProtocol
{
	func apply(filter: String) -> Void
	{
		var quantity: Int = ...
		
		// This works OK
		self.labelQuantity.text = "Founded \(quantity) element(s)."
	}
}