public void TestBatchableViewModel_ChangeModelProperty_AllPropertyChangedFired()
    {
      var listOfPropertyNames = new List<string>();
      var vm = new TestBatchableViewModel();
      vm.PropertyChanged += (sender, args) => { listOfPropertyNames.Add(args?.PropertyName); };

      vm.SetBackingModel(new TestModel(name: "Test", id: 1));

      var expectedListOfNames = new List<string>() { "Model", nameof(vm.Name), nameof(vm.ID) };

      Assert.IsTrue(expectedListOfNames.Except(listOfPropertyNames).Count() == 0, $"All property names expected are NOT in the fired list: expected:[{HelperMethods.GetStringFromCollection(expectedListOfNames)}], fired:[{HelperMethods.GetStringFromCollection(listOfPropertyNames)}].");
      Assert.IsTrue(listOfPropertyNames.Except(expectedListOfNames).Count() == 0, $"All property names fired are NOT in the expected list: expected:[{HelperMethods.GetStringFromCollection(expectedListOfNames)}], fired:[{HelperMethods.GetStringFromCollection(listOfPropertyNames)}].");

      CollectionAssert.AreEqual(expectedListOfNames, listOfPropertyNames, $"The expected properties of the TestViewModel: expected:[{HelperMethods.GetStringFromCollection(expectedListOfNames)}], fired:[{HelperMethods.GetStringFromCollection(listOfPropertyNames)}]. They fired in an incorrect order...");
    }
    public void TestBatchableViewModel_InBatchMode_ChangeModelProperty_NoPropertyChangedFired()
    {
      var listOfPropertyNames = new List<string>();
      var vm = new TestBatchableViewModel();
      vm.PropertyChanged += (sender, args) => { listOfPropertyNames.Add(args?.PropertyName); };

      vm.Begin_ViewModelUpdates();
      vm.SetBackingModel(new TestModel(name: "Test", id: 1));
      vm.End_ViewModelUpdates();

      var expectedListOfNames = new List<string>() { "Model", nameof(vm.Name), nameof(vm.ID) };

      Assert.IsFalse(expectedListOfNames.Except(listOfPropertyNames).Count() == 0, $"Nothing should have fired...uh oh...: expected:[{HelperMethods.GetStringFromCollection(expectedListOfNames)}], fired:[{HelperMethods.GetStringFromCollection(listOfPropertyNames)}].");
      Assert.IsTrue(listOfPropertyNames.Except(expectedListOfNames).Count() == 0, $"Nothing should have fired...uh oh...: expected:[{HelperMethods.GetStringFromCollection(expectedListOfNames)}], fired:[{HelperMethods.GetStringFromCollection(listOfPropertyNames)}].");

      Assert.AreEqual(0, listOfPropertyNames.Count, "No names should have fired...uh oh...");

      CollectionAssert.AreNotEqual(expectedListOfNames, listOfPropertyNames, $"The expected properties of the TestViewModel: expected:[{HelperMethods.GetStringFromCollection(expectedListOfNames)}], fired:[{HelperMethods.GetStringFromCollection(listOfPropertyNames)}]. They fired in an incorrect order...");
    }