private RecurlyAdjustment Adjust(int unitAmountInCents, string description, string accountingCode = null,
string currency = null, int quantity = 1)
{
var adjustment = new RecurlyAdjustment(AccountCode, unitAmountInCents)
{
Description = description,
Currency = string.IsNullOrWhiteSpace(currency) ? RecurlyClient.Currency : currency,
Quantity = quantity,
AccountingCode = accountingCode
};
return adjustment.Create() ? adjustment : null;
}
