[Swift] Set 2 PDFs to one UIImageView (merge multiple vector assets)

Extensions.swift

extension UIImageView {

    func mergeTwoPDF(one: UIImage, two: UIImage) {
        UIGraphicsBeginImageContextWithOptions(self.frame.size, false, UIScreen.main.scale)
        let areaSize = CGRect(x: 0, y: 0, width: self.frame.size.width, height: self.frame.size.height)
        one.draw(in: areaSize, blendMode: .normal, alpha: 1.0)
        two.draw(in: areaSize, blendMode: .normal, alpha: 1.0)
        //If you want to merge more than 2 images, just add them to the func parameters and repeat the line above with them
        let mergedImage = UIGraphicsGetImageFromCurrentImageContext()!
        UIGraphicsEndImageContext()
        self.image = mergedImage
    }
}