/**
  * Gets the {@link mondrian.rolap.aggmatcher.Recognizer.Matcher} for columns that should be
  * ignored.
  *
  * @return the {@link mondrian.rolap.aggmatcher.Recognizer.Matcher} for columns that should be
  *     ignored.
  */
 public Recognizer.Matcher getFactCountMatcher() {
   if (factCountMatcher == null) {
     // get default AggRule
     DefaultDef.AggRule rule = getAggRule();
     DefaultDef.FactCountMatch factCountMatch = rule.getFactCountMatch();
     factCountMatcher = factCountMatch.getMatcher();
   }
   return factCountMatcher;
 }