public static Account ExtractDirtyDbModels(this AccountOverview accountOverview)
        {
            Account returnAccount = null;

            if (accountOverview.IsDirty || accountOverview.IsChildDirty)
            {
                returnAccount = accountOverview.ToDbModel();
                foreach (var accountCategoryOverview in accountOverview.AccountCategories)
                {
                    if (accountCategoryOverview.IsDirty || accountCategoryOverview.IsChildDirty)
                    {
                        var accountCategory = accountCategoryOverview.ToDbModel();
                        foreach (var accountActualOverview in accountCategoryOverview.AccountActuals)
                        {
                            if (accountActualOverview.IsDirty || accountActualOverview.IsDeleted)
                            {
                                accountCategory.AccountActuals.Add(accountActualOverview.ToDbModel());
                            }
                        }
                        returnAccount.AccountCategories.Add(accountCategory);
                    }
                }
            }

            return(returnAccount);
        }