Saving Modified NSImage to Disk with Exif Info from Original Image

Question

I'm editing an NSImage which is read from disk.The original image has exif info like the camera make, location etc. When saving the NSImage , this EXIF info is lost. I'm using the following code to write the NSImage to disk.

let cgRef = modifiedImage.cgImage(forProposedRect: nil, context: nil, hints: nil)
var newRep: NSBitmapImageRep ? = nil
if let aRef = cgRef {
    newRep = NSBitmapImageRep(cgImage: aRef)
}
newRep?.size = modifiedImage.size ?? NSSize.zero
let filepath = URL(fileURLWithPath: imageURL + ".png")
let dataToSave = newRep?.representation(using: NSBitmapImageRep.FileType.png, properties: [NSBitmapImageRep.PropertyKey.compressionFactor: 1])
do {
    try dataToSave?.write(to: filepath)
    return true
} catch {
    return false
}
    

How can i copy the exif info from the original image to the saved one?