code: private static void writeHeader(final PrintWriter writer) {
  		writer.println("<table>");
  		writer.println("<thead>");
  		writer.print("<tr>");
  		writer.print("<th>Class</th>");
  		writer.print("<th>Model</th>");
  		writer.print("<th>Size</th>");
  		writer.print("<th>Ref.</th>");
  		writer.print("<th>Name</th>");
  		writer.print("<th>Comment</th>");
  		writer.println("</tr>");
  		writer.println("</thead>");
  	}
docs: Writes the stats header HTML.
  
  @param writer the writer to write the header to