code: def _stripe_object_to_subscription_items(cls, target_cls, data, subscription):
  		
  
  		items = data.get("items")
  		if not items:
  			return []
  
  		subscriptionitems = []
  		for item_data in items.get("data", []):
  			item, _ = target_cls._get_or_create_from_stripe_object(item_data, refetch=False)
  			subscriptionitems.append(item)
  
  		return subscriptionitems
docs: Retrieves SubscriptionItems for a subscription.
  
  		If the subscription item doesn't exist already then it is created.
  
  		:param target_cls: The target class to instantiate per invoice item.
  		:type target_cls: ``SubscriptionItem``
  		:param data: The data dictionary received from the Stripe API.
  		:type data: dict
  		:param invoice: The invoice object that should hold the invoice items.
  		:type invoice: ``djstripe.models.Subscription``