code: private void addAnnotationInfo(Doc doc, AnnotationDesc[] descList,
              Content htmltree) {
          addAnnotationInfo(0, doc, descList, true, htmltree);
      }
docs: Adds the annotatation types for the given doc.
  
  @param doc the doc to write annotations for.
  @param descList the array of {@link AnnotationDesc}.
  @param htmltree the documentation tree to which the annotation info will be
  added