private InstrumentBaseViewModel getInstBaseVM(string typeStr)
        { 
            InstrumentBaseViewModel instBaseVM;

            Uri instIUri = new Uri(PrototypeUri_.LocalPath + "prototype_" + typeStr + ".xml");
            Uri resultUri = new Uri(PrototypeUri_.LocalPath + "00000000_prototype_" + typeStr + ".xml");

            if (typeStr == "stepDownKI" || typeStr == "multiNameCDS")
            {
                InstUriInfo instUriInfo = new InstUriInfo("", "", instIUri);
                ResultUriInfo resultUriInfo = new ResultUriInfo("", "", resultUri);

                instBaseVM = new StandardInstBaseViewModel(instUriInfo);
                instBaseVM.ReferenceDate_ = PositionSingletonManger.referenceDate();
                instBaseVM.ResultUri_ = resultUriInfo;

                return instBaseVM;
            }
            else
            {
                InstUriInfo instUriInfo = new InstUriInfo("", "", new Uri(""));
                instBaseVM = new NoExistInstrumentBaseViewModel(instUriInfo);
                return instBaseVM;
            }
        }