code: @Override
      public Content getMemberSummaryHeader(TypeElement typeElement,
              Content memberSummaryTree) {
          memberSummaryTree.addContent(HtmlConstants.START_OF_FIELD_SUMMARY);
          Content memberTree = writer.getMemberTreeHeader();
          writer.addSummaryHeader(this, typeElement, memberTree);
          return memberTree;
      }
docs: {@inheritDoc}