public void ViewModel_GetModelTestCase()
        {
            CreateObjectViewModel firstViewModel = null;

            Given("Create view-model", frame => firstViewModel = ViewModelBase.CreateViewModel <CreateObjectViewModel>(frame))
            .When("Get model", _ => firstViewModel.GetModel <CreateObjectModel>())
            .Then("Cheking view-models", model =>
            {
                firstViewModel.NotNull()
                .CheckCreateObject(3);

                Assert.IsNotNull(model, "model can not be null");
            })
            .RunWindow(Timeuots.Second.Five);
        }
        public void Model_GetModelSameTypeTestCase()
        {
            CreateObjectViewModel firstViewModel = null;
            CreateObjectModel     firstModel     = null;
            CreateObjectModel     secondModel    = null;

            Given("Create view-model", frame => firstViewModel = ViewModelBase.CreateViewModel <CreateObjectViewModel>(frame))
            .When("Get models", _ =>
            {
                firstModel  = firstViewModel.GetModel <CreateObjectModel>();
                secondModel = firstModel.GetModel <CreateObjectModel>();
            })
            .Then("Cheking models", _ =>
            {
                firstViewModel.NotNull().CheckCreateObject(4);

                Assert.AreNotEqual(firstModel, secondModel, "must be different objects");
            })
            .RunWindow(Timeuots.Second.Five);
        }
        public void Model_GetModelTestCase()
        {
            CreateObjectViewModel firstViewModel = null;
            CreateObjectModel     firstModel     = null;
            TestModel             secondModel    = null;

            Given("Create view-model", frame => firstViewModel = ViewModelBase.CreateViewModel <CreateObjectViewModel>(frame))
            .When("Get models", _ =>
            {
                firstModel  = firstViewModel.GetModel <CreateObjectModel>();
                secondModel = firstModel.GetModel <TestModel>();
            })
            .Then("Cheking models", _ =>
            {
                firstViewModel.NotNull().CheckCreateObject(4);

                Assert.IsNotNull(firstModel, "first model can not be null");
                Assert.IsNotNull(secondModel, "first model can not be null");
                Assert.AreEqual(1, firstModel.GetModelCallCounter, $"method '{nameof(ModelBase.GetModel)}' should be called 1 times");
            })
            .RunWindow(Timeuots.Second.Five);
        }