public void SaveGoalList()
{
var repository = new GoalRepository(GetTestFileFolder());
var goalList = repository.GetGoalList($"goals.json");
goalList.Add(new GoalListItem {
Id = "8D642D0F-9CE1-4CF9-8CA6-828DFA25214E", PercentComplete = 99, Title = "Added Goal"
});
repository.SaveGoalList(goalList, $"saved_goals.json");
var goalListNew = repository.GetGoalList($"saved_goals.json");
}