Swift PDFKit how to scroll to specific point programmatically

Question

I have vertical scrolling pdfView:

var pdfView = PDFView()

        pdfView.displayDirection = .vertical
        pdfView.usePageViewController(false)
        pdfView.pageBreakMargins = UIEdgeInsets(top: 0, left: 0, bottom: 0, right: 0)
        pdfView.autoScales = true
        
        pdfView.backgroundColor = .black

I can scroll and zoom pdf file.

But how can I scroll pdfView programmatically?

pdfView.go(to: someCGRect, on: somePage)

I already know go(to:, on:), but it just jumps to that point and page without scrolling.

go(to: PDFPage) Scrolls, but just specified page.

reference: https://developer.apple.com/documentation/pdfkit/pdfview/navigation