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

CardPlot.cardWidth = cardWidth if cardWidth is not None else CardPlot.cardWidth
        CardPlot.cardHeight = cardHeight if cardHeight is not None else CardPlot.cardHeight
        CardPlot.tabWidth = tabWidth if tabWidth is not None else CardPlot.tabWidth
        CardPlot.tabHeight = tabHeight if tabHeight is not None else CardPlot.tabHeight
        CardPlot.lineType = lineType if lineType is not None else CardPlot.lineType
        CardPlot.tabStartSide = start if start is not None else CardPlot.tabStartSide
        CardPlot.tabSerpentine = serpentine if serpentine is not None else CardPlot.tabSerpentine
        CardPlot.wrapper = wrapper if wrapper is not None else CardPlot.wrapper
        # LEFT        tabs        RIGHT
        # +---+ +---+ +---+ +---+ +---+
        # | 1 | | 2 | | 3 | |...| | N |   Note: tabNumber = N, N >=1, 0 is for centred tabs
        # +   +-+   +-+   +-+   +-+   +

        # Setup first tab as well as starting point and direction of increment for tabs.
        if CardPlot.tabStartSide == CardPlot.RIGHT:
            CardPlot.tabStart = CardPlot.tabNumber
            CardPlot.tabIncrementStart = -1
        elif CardPlot.tabStartSide == CardPlot.CENTRE:
            # Get as close to centre as possible
            CardPlot.tabStart = (CardPlot.tabNumber + 1) // 2
            CardPlot.tabIncrementStart = 1
        else:
            # LEFT and anything else
            CardPlot.tabStartSide = CardPlot.LEFT
            CardPlot.tabStart = 1
            CardPlot.tabIncrementStart = 1

        if CardPlot.tabNumber == 1:
            CardPlot.tabIncrementStart = 0
        CardPlot.tabIncrement = CardPlot.tabIncrementStart

# +---+ +---+ +---+ +---+ +---+
        # | 1 | | 2 | | 3 | |...| | N |   Note: tabNumber = N, N >=1, 0 is for centred tabs
        # +   +-+   +-+   +-+   +-+   +

        # Setup first tab as well as starting point and direction of increment for tabs.
        if CardPlot.tabStartSide == CardPlot.RIGHT:
            CardPlot.tabStart = CardPlot.tabNumber
            CardPlot.tabIncrementStart = -1
        elif CardPlot.tabStartSide == CardPlot.CENTRE:
            # Get as close to centre as possible
            CardPlot.tabStart = (CardPlot.tabNumber + 1) // 2
            CardPlot.tabIncrementStart = 1
        else:
            # LEFT and anything else
            CardPlot.tabStartSide = CardPlot.LEFT
            CardPlot.tabStart = 1
            CardPlot.tabIncrementStart = 1

        if CardPlot.tabNumber == 1:
            CardPlot.tabIncrementStart = 0
        CardPlot.tabIncrement = CardPlot.tabIncrementStart

CardPlot.lineType = lineType if lineType is not None else CardPlot.lineType
        CardPlot.tabStartSide = start if start is not None else CardPlot.tabStartSide
        CardPlot.tabSerpentine = serpentine if serpentine is not None else CardPlot.tabSerpentine
        CardPlot.wrapper = wrapper if wrapper is not None else CardPlot.wrapper
        # LEFT        tabs        RIGHT
        # +---+ +---+ +---+ +---+ +---+
        # | 1 | | 2 | | 3 | |...| | N |   Note: tabNumber = N, N >=1, 0 is for centred tabs
        # +   +-+   +-+   +-+   +-+   +

        # Setup first tab as well as starting point and direction of increment for tabs.
        if CardPlot.tabStartSide == CardPlot.RIGHT:
            CardPlot.tabStart = CardPlot.tabNumber
            CardPlot.tabIncrementStart = -1
        elif CardPlot.tabStartSide == CardPlot.CENTRE:
            # Get as close to centre as possible
            CardPlot.tabStart = (CardPlot.tabNumber + 1) // 2
            CardPlot.tabIncrementStart = 1
        else:
            # LEFT and anything else
            CardPlot.tabStartSide = CardPlot.LEFT
            CardPlot.tabStart = 1
            CardPlot.tabIncrementStart = 1

        if CardPlot.tabNumber == 1:
            CardPlot.tabIncrementStart = 0
        CardPlot.tabIncrement = CardPlot.tabIncrementStart

def tabRestart():
        # Resets the tabIncrement to the starting value and returns the starting tabIndex number.
        CardPlot.tabIncrement = CardPlot.tabIncrementStart
        return CardPlot.tabStart

lastCardSet = card.cardset_tag

            if self.wantCentreTab(card):
                # If we want centred expansion cards, then force this divider to centre
                thisTabIndex = 0
            else:
                thisTabIndex = nextTabIndex

            item = CardPlot(card,
                            rotation=options.spin if options.spin != 0 else options.rotate,
                            tabIndex=thisTabIndex,
                            textTypeFront=options.text_front,
                            textTypeBack=options.text_back,
                            stackHeight=card.getStackHeight(options.thickness)
                            )
            if options.flip and (options.tab_number == 2) and (thisTabIndex != CardPlot.tabStart):
                item.flipFront2Back()  # Instead of flipping the tab, flip the whole divider front to back

            # Before moving on, setup the tab for the next item if this tab slot was used
            if thisTabIndex == nextTabIndex:
                nextTabIndex = item.nextTab(nextTabIndex)  # already used, so move on to the next tab

            items.append(item)
        return items