Rotate PDF Annotation

I'm working with PDFKit and trying to rotate PDFAnnotation from a PDFView:

Here is my code for a normal case(no rotated):

class ImageAnnotation: PDFAnnotation {
   var image: UIImage?
   init(image: UIImage?, bounds: CGRect) {
      self.image = image
      super.init(bounds: bounds, forType: .stamp, withProperties: nil)
   }
   override func draw(with box: PDFDisplayBox, in context: CGContext) {
      guard let cgImage = self.image?.cgImage else { return }
      context.draw(cgImage, in: bound)
   }
}

And here is the way I used to rotate PDFAnnotation:

init(image: UIImage?, bounds: CGRect) {
      self.image = image
      super.init(bounds: bounds.applying(CGAffineTransform(rotationAngle: -CGFloat.pi/12)), forType: .stamp, withProperties: nil)
}

override func draw(with box: PDFDisplayBox, in context: CGContext) {
        guard let cgImage = self.image?.cgImage else { return }
        context.rotate(by: CGFloat.pi/12)
        context.draw(cgImage, in: bounds)
}

But it doesn't work as expected. Can you help me? Thank you.