code: public Content seeTagOutput(Doc holder, SeeTag[] seeTags) {
          ContentBuilder body = new ContentBuilder();
          if (seeTags.length > 0) {
              for (int i = 0; i < seeTags.length; ++i) {
                  appendSeparatorIfNotEmpty(body);
                  body.addContent(htmlWriter.seeTagToContent(seeTags[i]));
              }
          }
          if (holder.isField() && ((FieldDoc)holder).constantValue() != null &&
                  htmlWriter instanceof ClassWriterImpl) {
              //Automatically add link to constant values page for constant fields.
              appendSeparatorIfNotEmpty(body);
              DocPath constantsPath =
                      htmlWriter.pathToRoot.resolve(DocPaths.CONSTANT_VALUES);
              String whichConstant =
                      ((ClassWriterImpl) htmlWriter).getClassDoc().qualifiedName() + "." + ((FieldDoc) holder).name();
              DocLink link = constantsPath.fragment(whichConstant);
              body.addContent(htmlWriter.getHyperLink(link,
                      new StringContent(configuration.getText("doclet.Constants_Summary"))));
          }
          if (holder.isClass() && ((ClassDoc)holder).isSerializable()) {
              //Automatically add link to serialized form page for serializable classes.
              if ((SerializedFormBuilder.serialInclude(holder) &&
                        SerializedFormBuilder.serialInclude(((ClassDoc)holder).containingPackage()))) {
                  appendSeparatorIfNotEmpty(body);
                  DocPath serialPath = htmlWriter.pathToRoot.resolve(DocPaths.SERIALIZED_FORM);
                  DocLink link = serialPath.fragment(((ClassDoc)holder).qualifiedName());
                  body.addContent(htmlWriter.getHyperLink(link,
                          new StringContent(configuration.getText("doclet.Serialized_Form"))));
              }
          }
          if (body.isEmpty())
              return body;
  
          ContentBuilder result = new ContentBuilder();
          result.addContent(HtmlTree.DT(HtmlTree.SPAN(HtmlStyle.seeLabel,
                  new StringContent(configuration.getText("doclet.See_Also")))));
          result.addContent(HtmlTree.DD(body));
          return result;
  
      }
docs: {@inheritDoc}