void OnFinish()
{
var description = new GraphDescription();
var pageVm = _infoPageView.DataContext as WizardInfoPageViewModel;
description = pageVm.FillDescription(description);
var edgesVm = _edgesPageView.DataContext as WizardEdgesPageViewModel;
description = edgesVm.FillDescription(description);
var nodesVm = _nodesPageView.DataContext as WizardNodesPageViewModel;
description = nodesVm.FillDescription(description);
_eventAggregator.GetEvent <FillTextInputEvent>().Publish(description.ToString());
Close();
}
