How to use the domdiv.draw.CardPlot.CENTRE function in domdiv

if linenum == 0:
                    h += h / 2
                else:
                    h -= h / 2

            words = line.split()
            NotRightEdge = (
                not self.options.tab_name_align == "right" and
                (self.options.tab_name_align == "centre" or
                 item.getClosestSide(backside=backside) != CardPlot.RIGHT or
                 not self.options.tab_name_align == "edge"))
            if wrapper == "back" and not self.options.tab_name_align == "centre":
                NotRightEdge = not NotRightEdge
            if NotRightEdge:
                if (self.options.tab_name_align == "centre" or self.wantCentreTab(card)
                        or (item.getClosestSide(backside=backside) == CardPlot.CENTRE
                            and self.options.tab_name_align == "edge")):
                    w = item.tabWidth / 2 - self.nameWidth(line, fontSize) / 2
                else:
                    w = textInset

                def drawWordPiece(text, fontSize):
                    self.canvas.setFont(self.font_mapping['Regular'], fontSize)
                    if text != ' ':
                        self.canvas.drawString(w, h, text)
                    return pdfmetrics.stringWidth(text, self.font_mapping['Regular'],
                                                  fontSize)

                for i, word in enumerate(words):
                    if i != 0:
                        w += drawWordPiece(' ', fontSize)
                    w += drawWordPiece(word[0], fontSize)

self.tabOffsetBack = (CardPlot.cardWidth - CardPlot.tabWidth) / 2
            else:
                # LEFT and anything else
                self.tabOffset = 0
                self.tabOffsetBack = CardPlot.cardWidth - CardPlot.tabWidth
        else:
            # More than 1 tabs
            self.tabOffset = (self.tabIndex - 1) * (
                             (CardPlot.cardWidth - CardPlot.tabWidth) / (CardPlot.tabNumber - 1))
            self.tabOffsetBack = CardPlot.cardWidth - CardPlot.tabWidth - self.tabOffset

            # Set  which edge is closest to the tab
            if self.tabIndex <= CardPlot.tabNumber / 2:
                self.closestSide = CardPlot.LEFT
            else:
                self.closestSide = CardPlot.RIGHT if self.tabIndex > (CardPlot.tabNumber + 1) / 2 else CardPlot.CENTRE

# Drawing line type
        if options.cropmarks:
            if 'dot' in options.linetype.lower():
                lineType = 'dot'  # Allow the DOTs if requested
            else:
                lineType = 'no_line'
        else:
            lineType = options.linetype.lower()

        # Starting with tabs on the left, right, or centre?
        if "right" in options.tab_side:
            tabSideStart = CardPlot.RIGHT  # right, right-alternate, right-flip
        elif "left" in options.tab_side:
            tabSideStart = CardPlot.LEFT  # left, left-alternate, left-flip
        elif "centre" in options.tab_side:
            tabSideStart = CardPlot.CENTRE  # centre
        elif "full" == options.tab_side:
            tabSideStart = CardPlot.CENTRE  # full
        else:
            tabSideStart = CardPlot.LEFT  # catch anything else

        cardWidth = options.dominionCardWidth
        cardHeight = options.dominionCardHeight

        # Adjust for Vertical
        if options.orientation == "vertical":
            cardWidth, cardHeight = cardHeight, cardWidth

        # Initialized CardPlot tabs
        CardPlot.tabSetup(tabNumber=options.tab_number,
                          cardWidth=cardWidth,
                          cardHeight=cardHeight,