if (box.getStyle().isFixed()) { currentLine.setFixedDescendant(true); }
    public static void generateAbsoluteBox(LayoutContext c, Content content, LineBox currentLine) {        Rectangle oe = c.getExtents();// copy the extents for safety        c.setExtents(new Rectangle(oe));        Box box = Boxing.layout(c, content);        box.setContainingBlock(c.getLayer().getMaster());        box.setStaticParent(currentLine);                // HACK        if (box.getStyle().isFixed()) {            currentLine.setFixedDescendant(true);        }                c.setExtents(oe);    }