public List<String> getCvLookupXmlStrings() {
   return indexer.getXmlStringList(PrideXmlXpath.MZDATA_CVLOOKUP.getXpath());
 }
 public List<String> getReferenceXmlStrings() {
   return indexer.getXmlStringList(PrideXmlXpath.EXP_REF.getXpath());
 }