@Override
 public ParametersList clone() {
   try {
     final ParametersList clone = (ParametersList) super.clone();
     clone.myParameters = new ArrayList<String>(myParameters);
     clone.myGroups = new ArrayList<ParamsGroup>(myGroups.size() + 1);
     for (ParamsGroup group : myGroups) {
       clone.myGroups.add(group.clone());
     }
     return clone;
   } catch (CloneNotSupportedException e) {
     LOG.error(e);
     return null;
   }
 }