protected ArchivalUnit createAu() throws ArchivalUnit.ConfigurationException {
   return PluginTestUtil.createAndStartAu(
       PLUGIN_NAME,
       ConfigurationUtil.fromArgs(
           "base_url",
           "http://pediatrics.aappublications.org/",
           "volume_name",
           "52",
           "journal_issn",
           "1098-4275"));
 }