public IList <ShoppingListDto> GetListsByUserId(int userId)
{
var linkedUserLists = _listRepository.GetLinkByUserId(userId);
List <ShoppingListDto> listOfLists = new List <ShoppingListDto>();
foreach (LinkUserToList link in linkedUserLists)
{
var list = Get(link.ShoppingListId, userId);
listOfLists.Add(list);
}
return(listOfLists);
}