/**
  * Add a row for the class that uses the given package.
  *
  * @param usedClass the class that uses the given package
  * @param packageName the name of the package to which the class belongs
  * @param contentTree the content tree to which the row will be added
  */
 protected void addClassRow(ClassDoc usedClass, String packageName, Content contentTree) {
   DocPath dp = pathString(usedClass, DocPaths.CLASS_USE.resolve(DocPath.forName(usedClass)));
   Content td =
       HtmlTree.TD(
           HtmlStyle.colOne,
           getHyperLink(dp.fragment(packageName), new StringContent(usedClass.name())));
   addIndexComment(usedClass, td);
   contentTree.addContent(td);
 }
 /**
  * Add use information to the documentation tree.
  *
  * @param mems list of program elements for which the use information will be added
  * @param heading the section heading
  * @param tableSummary the summary for the use table
  * @param contentTree the content tree to which the use information will be added
  */
 protected void addUseInfo(
     List<? extends ProgramElementDoc> mems,
     Content heading,
     String tableSummary,
     Content contentTree) {
   if (mems == null) {
     return;
   }
   List<? extends ProgramElementDoc> members = mems;
   boolean printedUseTableHeader = false;
   if (members.size() > 0) {
     Content caption = writer.getTableCaption(heading);
     Content table =
         (configuration.isOutputHtml5())
             ? HtmlTree.TABLE(HtmlStyle.useSummary, caption)
             : HtmlTree.TABLE(HtmlStyle.useSummary, tableSummary, caption);
     Content tbody = new HtmlTree(HtmlTag.TBODY);
     Iterator<? extends ProgramElementDoc> it = members.iterator();
     for (int i = 0; it.hasNext(); i++) {
       ProgramElementDoc pgmdoc = it.next();
       ClassDoc cd = pgmdoc.containingClass();
       if (!printedUseTableHeader) {
         table.addContent(writer.getSummaryTableHeader(this.getSummaryTableHeader(pgmdoc), "col"));
         printedUseTableHeader = true;
       }
       HtmlTree tr = new HtmlTree(HtmlTag.TR);
       if (i % 2 == 0) {
         tr.addStyle(HtmlStyle.altColor);
       } else {
         tr.addStyle(HtmlStyle.rowColor);
       }
       HtmlTree tdFirst = new HtmlTree(HtmlTag.TD);
       tdFirst.addStyle(HtmlStyle.colFirst);
       writer.addSummaryType(this, pgmdoc, tdFirst);
       tr.addContent(tdFirst);
       HtmlTree tdLast = new HtmlTree(HtmlTag.TD);
       tdLast.addStyle(HtmlStyle.colLast);
       if (cd != null && !(pgmdoc instanceof ConstructorDoc) && !(pgmdoc instanceof ClassDoc)) {
         HtmlTree name = new HtmlTree(HtmlTag.SPAN);
         name.addStyle(HtmlStyle.typeNameLabel);
         name.addContent(cd.name() + ".");
         tdLast.addContent(name);
       }
       addSummaryLink(
           pgmdoc instanceof ClassDoc ? LinkInfoImpl.Kind.CLASS_USE : LinkInfoImpl.Kind.MEMBER,
           cd,
           pgmdoc,
           tdLast);
       writer.addSummaryLinkComment(this, pgmdoc, tdLast);
       tr.addContent(tdLast);
       tbody.addContent(tr);
     }
     table.addContent(tbody);
     contentTree.addContent(table);
   }
 }