Como deixar imagens redondas com Swift alterando o Storyboard

ProfileImageView.swift

import UIKit

@IBDesignable class ProfileImageView: UIImageView {
  @IBInspectable var cornerRadius: CGFloat = 0 {
    didSet{
      self.layer.cornerRadius = cornerRadius
    }
  }
  
  @IBInspectable var borderWidth: CGFloat = 0 {
    didSet{
      self.layer.borderWidth = borderWidth
    }
  }
  
  @IBInspectable var borderColor: UIColor = .white {
    self.layer.borderColor = borderColor
  }
}

ViewController.swift

import Foundation

class ViewController: UIViewController {

  @IBOutlet weak var ivProfile: ProfileImageView!
  
  override func viewDidLoad() {
    super.viewDidLoad()
  }
  
}