UnoRuntime.queryInterface(XModel.class, xChartDoc);
AccessibilityTools at = new AccessibilityTools();
XWindow xWindow = at.getCurrentWindow((XMultiServiceFactory)Param.getMSF(), aModel);
XAccessible xRoot = at.getAccessibleObject(xWindow);
at.printAccessibleTree(log, xRoot, Param.getBool(util.PropertyName.DEBUG_IS_ACTIVE));
XAccessibleContext cont = at.getAccessibleObjectForRole(
xRoot, AccessibleRole.SHAPE, "", "AccWall");