         fatalError("init(coder:) has not been implemented")
     }
     
-    func buildLeftBar(var transform transform: CGAffineTransform) -> SKShapeNode {
+    private func buildLeftBar(var transform transform: CGAffineTransform) -> SKShapeNode {
         // TODO: Extract size and color
         let path = CGPathCreateMutable()
         CGPathMoveToPoint(path, nil, -100, 2)


import SpriteKit

public enum AttitudeReferenceIndexStyle {
    case Bars
    case Nose
}

class AttitudeReferenceIndex: SKNode {
    init(style: AttitudeReferenceIndexStyle = .Bars) {
        super.init()
        switch style {
        case .Bars: addChild(Bars())
        case .Nose: addChild(Nose())
        }
    }

    required init?(coder aDecoder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }
}

private class Bars: SKNode {
    
    override init() {
        super.init()

        return shape
    }
}
