* @param offerIDPrefix The prefix for the id of the new offer. This might be <code>null</code>.
* @return The newly created {@link RecurredOffer}ยท
*/
public RecurredOffer createRecurredOffer(RecurringOffer recurringOffer,User user, Order order, String offerIDPrefix)
{
TradeSide tradeSide;
LegalEntity vendor = order.getVendor();
if (vendor == null)
throw new IllegalStateException("order.getVendor() returned null!");