public override void Connect()
        {
            if (viewModelPropertyWatcher != null)
            {
                // Already connected - no need to connect again.
                return;
            }

            string propertyName;
            object viewModel;

            ParseViewModelEndPointReference(viewModelPropertyName, out propertyName, out viewModel);

            viewModelPropertyWatcher = new PropertyWatcher(viewModel, propertyName, NotifyPropertyChanged_PropertyChanged);

            UpdateViewModel();
        }
        public override void Connect()
        {
            dropdown = GetComponent <Dropdown>();

            var selectionPropertyEndPoint = MakeViewModelEndPoint(viewModelSelectionPropertyName, selectionUIToViewModelAdapter);

            var selectionPropertySync = new PropertySync(
                // Source
                selectionPropertyEndPoint,

                // Dest
                new PropertyEndPoint(
                    this,
                    "SelectedOption",
                    CreateAdapter(selectionViewModelToUIAdapter),
                    "view",
                    this
                    ),

                // Errors, exceptions and validation.
                !string.IsNullOrEmpty(exceptionPropertyName)
                    ? MakeViewModelEndPoint(exceptionPropertyName, exceptionAdapterTypeName)
                    : null
                ,

                this
                );

            selectionPropertyWatcher = selectionPropertyEndPoint
                                       .Watch(() => selectionPropertySync.SyncFromSource());

            selectionEventWatcher = new UnityEventWatcher(
                dropdown,
                "onValueChanged",
                () =>
            {
                selectedOption = Options[dropdown.value];     // Copy value back from dropdown.
                selectionPropertySync.SyncFromDest();
            }
                );

            var optionsPropertySync = new PropertySync(
                // Source
                MakeViewModelEndPoint(viewModelOptionsPropertyName, null),

                // Dest
                new PropertyEndPoint(
                    this,
                    "Options",
                    CreateAdapter(optionsAdapter),
                    "view",
                    this
                    ),

                // Errors, exceptions and validation.
                null, // Validation not needed

                this
                );

            // Copy the initial value from view-model to view.
            selectionPropertySync.SyncFromSource();
            optionsPropertySync.SyncFromSource();
            UpdateOptions();
        }