public async Task <ListWithShares> GetWithSharesAsync(int id, int userId)
{
ToDoList list = await _listsRepository.GetWithOwnerAsync(id, userId);
if (list == null)
{
return(null);
}
list.Shares.AddRange(await _listsRepository.GetSharesAsync(id));
var result = _mapper.Map <ListWithShares>(list, opts => { opts.Items["UserId"] = userId; });
result.Shares.RemoveAll(x => x.UserId == userId);
return(result);
}