protected void addDimension(
     RootContainer processDefinitionNotationElement, Element processDiagramInfo) {
   String width = getAttribute(processDiagramInfo, "width");
   String height = getAttribute(processDiagramInfo, "height");
   Dimension dimension =
       new Dimension(
           width == null ? 0 : Integer.valueOf(width).intValue(),
           height == null ? 0 : Integer.valueOf(height).intValue());
   processDefinitionNotationElement.setDimension(dimension);
 }