code: @Override
      public Content getEnumConstantsDetailsTreeHeader(TypeElement typeElement,
              Content memberDetailsTree) {
          memberDetailsTree.addContent(HtmlConstants.START_OF_ENUM_CONSTANT_DETAILS);
          Content enumConstantsDetailsTree = writer.getMemberTreeHeader();
          enumConstantsDetailsTree.addContent(writer.getMarkerAnchor(
                  SectionName.ENUM_CONSTANT_DETAIL));
          Content heading = HtmlTree.HEADING(HtmlConstants.DETAILS_HEADING,
                  contents.enumConstantDetailLabel);
          enumConstantsDetailsTree.addContent(heading);
          return enumConstantsDetailsTree;
      }
docs: {@inheritDoc}