code: public int getNumberOfClasses()
    {
      if (TraceComponent.isAnyTracingEnabled() && tc.isEntryEnabled())
      {
        SibTr.entry(tc, "getNumberOfClasses");
        SibTr.exit(tc, "getNumberOfClasses", Integer.valueOf(numberOfClasses));    
      }
      return numberOfClasses;
    }
docs: Retrieve the number of classifications specified in the current set.
  
  @return