code: private StringBuffer getListOfEnums() 
    {
       StringBuffer enumNamesList = new StringBuffer();            
       String [] enumValues = this.getEnumNames();
  
       for (int i = 0; i < enumValues.length; i++)
       {
          if (i > 0)
          {
             enumNamesList.append(' ');
          }
          enumNamesList.append(enumValues[i]);
      }        
      return enumNamesList;
    }
docs: StringBuffer containing comma delimited list of valid values for ENUM type.
  Used to build error message.