existingRelationship.setName(unusedName, false);
existingRelationship.setName(unusedName, true);
  public void _checkForDuplicateRelationshipName(EORelationship _relationship, String _newName, Set _failures) throws DuplicateNameException {    IEOAttribute existingRelationship = getAttributeOrRelationshipNamed(_newName);    if (existingRelationship != null && existingRelationship != _relationship) {      if (_failures == null) {        throw new DuplicateRelationshipNameException(_newName, this);      }      String unusedName = findUnusedRelationshipName(_newName);      existingRelationship.setName(unusedName, false);      _failures.add(new DuplicateRelationshipFailure(this, _newName, unusedName));    }  }