docs: def _offload(self, args, **extra_args):
          """
          Export is the entry point for exporting docker images.
          """
          if not isinstance(args, argparse.Namespace):
              raise Exception("args should of an instance of argparse.Namespace")
  
          # create new freight forwarder object
          freight_forwarder = FreightForwarder()
  
          # create commercial invoice this is the contact given to freight forwarder dispatch containers and images
          commercial_invoice = freight_forwarder.commercial_invoice(
              'offload',
              args.data_center,
              args.environment,
              args.service
          )
  
          # off load container and images.
          bill_of_lading = freight_forwarder.offload(commercial_invoice)
  
          # pretty lame... Need to work on return values through to app to make them consistent.
          exit_code = 0 if bill_of_lading else 1
  
          if exit_code != 0:
              exit(exit_code)