@staticmethod
def page_fn_footer(canvas, doc):
    """ A footer with the print date on the left and the page numbers
        on the right.

        """
    canvas.saveState()
    canvas.setFont('Helvetica', 9)
    canvas.drawString(doc.leftMargin, doc.bottomMargin / 2,
        f'Druckdatum: {doc.created}')
    canvas.drawRightString(doc.pagesize[0] - doc.rightMargin, doc.
        bottomMargin / 2, f'{canvas._pageNumber}')
    canvas.restoreState()
