ImageSpeedometer can't call drawDefMinMaxSpeedPosition without overriding class

[agronick]

Describe the bug
This seems like an oversight. There is no way to set min and max on an image speedometer without overriding the class. SpeedView has this code in updateBackgroundBitmap.

        if (tickNumber > 0)
            drawTicks(c)
        else
            drawDefMinMaxSpeedPosition(c)

ImageSpeedometer just has

        drawMarks(c)
        drawTicks(c)

drawDefMinMaxSpeedPosition is protected so you can't call it without overriding the class.

[anastr]

ImageSpeedometer doesn't have this functionality