Sales order shipment details

// JAVA language

Using below code is am able to get the details of order status and its item level information such as quantity fulfilled. I am able to get the ship method details, tax amount ... at sales order level, in addition to this, i want item fulfillment details like such as package tracking number,
Ship Via ,Integrated Shipping Label, etc., . guide me how to achieve this.

(Example code will be helpful):)

RecordRef recordRef = new RecordRef();
recordRef.setInternalId(internalID);
recordRef.setType(RecordType.salesOrder);

response = _nsConnection.netSuitePort().get(recordRef);
 
SalesOrder salesOrder = (SalesOrder) response.getRecord();

SalesOrderItemList itemList = salesOrder.getItemList();

SalesOrderItem[] salesOrderItemArray = itemList.getItem();