''

def add_page_decorators(self, canvas, doc):

    if self.header_flowable:
        top = (self.bottomMargin + self.printable_height)
        for flow in self.header_flowable:
            height = self.get_flowable_size(flow)[PDF_HEIGHT]
            bottom = (top - height)
            flow.drawOn(canvas, self.leftMargin, bottom)
            top = bottom
    if self.footer_flowable:
        top = (self.bottomMargin + self.footer_height)
        for flow in self.footer_flowable:
            height = self.get_flowable_size(flow)[PDF_HEIGHT]
            bottom = (top - height)
            flow.drawOn(canvas, self.leftMargin, bottom)
            top = bottom
