Optionalaccount_The carrier account to purchase the label with.
If left null, a Shipgenius-provided account will be
used, if available.
The carrier to send shipments with
The carrier service to send shipments with.
See "@shipgenius/oms".ShipGeniusOmsClient.getSupportedServices for a list of supported services for each carrier.
The service to ship the bulk shipment with by default