code: public Content getClassLinkLabel(Configuration configuration) {
          if (label != null && !label.isEmpty()) {
              return label;
          } else if (isLinkable()) {
              Content tlabel = newContent();
              tlabel.addContent(configuration.utils.getSimpleName(typeElement));
              return tlabel;
          } else {
              Content tlabel = newContent();
              tlabel.addContent(configuration.getClassName(typeElement));
              return tlabel;
          }
      }
docs: Return the label for this class link.
  
  @param configuration the current configuration of the doclet.
  @return the label for this class link.