Like all OsidLists, BillingList provides a means for accessing Billing elements sequentially either one at a time or many at a time. Examples:

                     
                     
                     while (bl.hasNext()) {
                          Billing billing = bl.getNextBilling();
                     }
                     
                                 
                     
                

                     
                     
                     while (bl.hasNext()) {
                          Billing[] billing = bl.getNextBillings(bl.available());
                     }