@Override
 public void storeExerciseList(ExerciseList exerciseList, String destination) throws STException {
   xmlExerciseList.storeExerciseList(exerciseList, destination);
 }
 @Override
 public ExerciseList readExerciseList(String source, SportTypeList sportTypeList)
     throws STException {
   return xmlExerciseList.readExerciseList(source, sportTypeList);
 }