public ClearDiscardListStatusCodes ClearDiscardList()
{
var allDiscardBooks = bookManager.GetAllBooksInDiscardList();
if (allDiscardBooks.Count == 0)
{
return(ClearDiscardListStatusCodes.NoDiscardBooksToClear);
}
bookManager.ClearDiscardList(allDiscardBooks);
return(ClearDiscardListStatusCodes.Ok);
}