code: public Content getTagletOutput(Element element, DocTree tag, TagletWriter tagletWriter) {
          return tagletWriter.propertyTagOutput(element, tag, getText(tagletWriter));
      }
docs: Given the <code>Tag</code> representation of this custom
  tag, return its string representation, which is output
  to the generated page.
  @param element
  @param tag the <code>Tag</code> representation of this custom tag.
  @param tagletWriter the taglet writer for output.
  @return the TagletOutput representation of this <code>Tag</code>.