/**
  * Creates a {@link mondrian.rolap.aggmatcher.Recognizer.Matcher} for the given measure name
  * (symbolic name), column name and aggregate name (sum, count, etc.).
  */
 public Recognizer.Matcher getMeasureMatcher(
     final String measureName, final String measureColumnName, final String aggregateName) {
   DefaultDef.AggRule rule = getAggRule();
   Recognizer.Matcher matcher =
       rule.getMeasureMap().getMatcher(measureName, measureColumnName, aggregateName);
   return matcher;
 }