@see
   * org.apache.hadoop.yarn.server.applicationhistoryservice.webapp.AHSView#
   * preHead(org.apache.hadoop .yarn.webapp.hamlet.Hamlet.HTML)
@see
   * org.apache.hadoop.yarn.server.applicationhistoryservice.webapp.AHSView#
   * preHead(org.apache.hadoop .yarn.webapp.hamlet.Hamlet.HTML) | AHSLogsPage.java