@Override
    public String convert(CommittedChangeList o) {
      if (myProviderClass == null || myProviderClass.isInstance(o.getVcs().getCommittedChangesProvider())) {
        return myColumn.getValue(ReceivedChangeList.unwrap(o)).toString();
      }
      return null;
    }
@Override
    public String convert(CommittedChangeList o)