public PixelsDimensionsTrans(Transformer transformer, Object model)
public PixelsDimensionsTrans(Object model, Session session, Experimenter owner, Event creationEvent, List toSave)
    public PixelsDimensionsTrans(Transformer transformer, Object model)    {        super(model, transformer.getSession(), transformer.getOwner(),              transformer.getCreationEvent(), transformer.getToSave());    }