code: public Content getFieldDetailsTreeHeader(ClassDoc classDoc,
              Content memberDetailsTree) {
          memberDetailsTree.addContent(HtmlConstants.START_OF_FIELD_DETAILS);
          Content fieldDetailsTree = writer.getMemberTreeHeader();
          fieldDetailsTree.addContent(writer.getMarkerAnchor(
                  SectionName.FIELD_DETAIL));
          Content heading = HtmlTree.HEADING(HtmlConstants.DETAILS_HEADING,
                  writer.fieldDetailsLabel);
          fieldDetailsTree.addContent(heading);
          return fieldDetailsTree;
      }
docs: {@inheritDoc}