public SupplementItemViewModel AddSupplementItem(SuplementDTO supplement = null)
{
var item = new SuplementItemDTO();
item.Suplement = supplement;
item.Time.DateTime = DateTime.Now;
item.SuplementsEntry = Entry;
Entry.Items.Add(item);
var viewModel = new SupplementItemViewModel(item);
_supplements.Add(viewModel);
return(viewModel);
}