UITextField subclass with padding editable in Storyboard

TextFieldWithPadding.swift

import UIKit

@IBDesignable
class TextFieldWithPadding: UITextField {
    
    @IBInspectable var paddingLeft: CGFloat = 0.0
    @IBInspectable var paddingRight: CGFloat = 0.0
    
    var padding: UIEdgeInsets {
        UIEdgeInsets(top: 0, left: paddingLeft, bottom: 0, right: paddingRight)
    }
    
    required init?(coder aDecoder: NSCoder) {
      super.init(coder: aDecoder)
    }
    
    override func textRect(forBounds bounds: CGRect) -> CGRect {
      bounds.inset(by: padding)
    }
    
    override func placeholderRect(forBounds bounds: CGRect) -> CGRect {
      bounds.inset(by: padding)
    }
    
    override func editingRect(forBounds bounds: CGRect) -> CGRect {
      bounds.inset(by: padding)
    }
}