Get Image from CALayer or NSView (swift 3)

Here are some NSView options:

extension NSView {    /// Get `NSImage` representation of the view.    ///    /// - Returns: `NSImage` of view    func image() -> NSImage {        let imageRepresentation = bitmapImageRepForCachingDisplay(in: bounds)!        cacheDisplay(in: bounds, to: imageRepresentation)        return NSImage(cgImage: imageRepresentation.cgImage!, size: bounds.size)    }}

Or

extension NSView {    /// Get `Data` representation of the view.    ///    /// - Parameters:    ///   - fileType: The format of file. Defaults to PNG.    ///   - properties: A dictionary that contains key-value pairs specifying image properties.    /// - Returns: `Data` for image.    func data(using fileType: NSBitmapImageFileType = .PNG, properties: [String : Any] = [:]) -> Data {        let imageRepresentation = bitmapImageRepForCachingDisplay(in: bounds)!        cacheDisplay(in: bounds, to: imageRepresentation)        return imageRepresentation.representation(using: fileType, properties: properties)!    }}

Some CALayer options:

extension CALayer {    /// Get `NSImage` representation of the layer.    ///    /// - Returns: `NSImage` of the layer.    func image() -> NSImage {        let width = Int(bounds.width * self.contentsScale)        let height = Int(bounds.height * self.contentsScale)        let imageRepresentation = NSBitmapImageRep(bitmapDataPlanes: nil, pixelsWide: width, pixelsHigh: height, bitsPerSample: 8, samplesPerPixel: 4, hasAlpha: true, isPlanar: false, colorSpaceName: NSDeviceRGBColorSpace, bytesPerRow: 0, bitsPerPixel: 0)!        imageRepresentation.size = bounds.size        let context = NSGraphicsContext(bitmapImageRep: imageRepresentation)!        render(in: context.cgContext)        return NSImage(cgImage: imageRepresentation.cgImage!, size: bounds.size)    }}

Or

extension CALayer {    /// Get `Data` representation of the layer.    ///    /// - Parameters:    ///   - fileType: The format of file. Defaults to PNG.    ///   - properties: A dictionary that contains key-value pairs specifying image properties.    ///    /// - Returns: `Data` for image.    func data(using fileType: NSBitmapImageFileType = .PNG, properties: [String : Any] = [:]) -> Data {        let width = Int(bounds.width * self.contentsScale)        let height = Int(bounds.height * self.contentsScale)        let imageRepresentation = NSBitmapImageRep(bitmapDataPlanes: nil, pixelsWide: width, pixelsHigh: height, bitsPerSample: 8, samplesPerPixel: 4, hasAlpha: true, isPlanar: false, colorSpaceName: NSDeviceRGBColorSpace, bytesPerRow: 0, bitsPerPixel: 0)!        imageRepresentation.size = bounds.size        let context = NSGraphicsContext(bitmapImageRep: imageRepresentation)!        render(in: context.cgContext)        return imageRepresentation.representation(using: fileType, properties: properties)!    }}