old_contents: from django.core.exceptions import ObjectDoesNotExist
  from django.core.management.base import BaseCommand, CommandError
  
  from waldur_mastermind.marketplace.models import Offering, Plan
  from waldur_mastermind.marketplace_openstack import PACKAGE_TYPE
  
  from ... import utils
  
  
  class Command(BaseCommand):
      help = """Import OpenStack tenant quotas to marketplace."""
  
      def add_arguments(self, parser):
          parser.add_argument('--offering', dest='offering_uuid', required=True,
                              help='UUID of marketplace offering for OpenStack tenant provisioning.')
          parser.add_argument('--plan', dest='plan_uuid', required=True,
                              help='UUID of example marketplace plan related to the same offering.')
  
      def handle(self, *args, **options):
          offering_uuid = options['offering_uuid']
          plan_uuid = options['plan_uuid']
  
          try:
              offering = Offering.objects.get(uuid=offering_uuid)
          except ObjectDoesNotExist:
              raise CommandError('Offering with given UUID is not found.')
  
          if offering.type != PACKAGE_TYPE:
              raise CommandError('Offering is not related to OpenStack tenants.')
  
          try:
              plan = Plan.objects.get(uuid=plan_uuid)
          except ObjectDoesNotExist:
              raise CommandError('Plan with given UUID is not found.')
  
          if plan.offering != offering:
              raise CommandError('Plan is related to another offering.')
  
          utils.merge_plans(offering, plan)
  
new_contents: from django.core.exceptions import ObjectDoesNotExist
  from django.core.management.base import BaseCommand, CommandError
  
  from waldur_mastermind.marketplace.models import Offering, Plan
  from waldur_mastermind.marketplace_openstack import PACKAGE_TYPE
  
  from ... import utils
  
  
  class Command(BaseCommand):
      help = """Merge marketplace plans related to OpenStack tenant offering."""
  
      def add_arguments(self, parser):
          parser.add_argument('--offering', dest='offering_uuid', required=True,
                              help='UUID of marketplace offering for OpenStack tenant provisioning.')
          parser.add_argument('--plan', dest='plan_uuid', required=True,
                              help='UUID of example marketplace plan related to the same offering.')
  
      def handle(self, *args, **options):
          offering_uuid = options['offering_uuid']
          plan_uuid = options['plan_uuid']
  
          try:
              offering = Offering.objects.get(uuid=offering_uuid)
          except ObjectDoesNotExist:
              raise CommandError('Offering with given UUID is not found.')
  
          if offering.type != PACKAGE_TYPE:
              raise CommandError('Offering is not related to OpenStack tenants.')
  
          try:
              plan = Plan.objects.get(uuid=plan_uuid)
          except ObjectDoesNotExist:
              raise CommandError('Plan with given UUID is not found.')
  
          if plan.offering != offering:
              raise CommandError('Plan is related to another offering.')
  
          utils.merge_plans(offering, plan)
  
subject: Fix description.