//Updates the cache with data from the API
 private async Task UpdateUserCache()
 {
     if (itemCache == null)
     {
         itemCache = await DataRequestController.GetData <TaskItem>("todos");
     }
 }
 //Updates the cache with data from the API
 private async Task UpdateUserCache()
 {
     if (userCache == null)
     {
         userCache = await DataRequestController.GetData <TodoUser>("users");
     }
 }