code: def initialise_shopify_session():
      
      if not settings.SHOPIFY_APP_API_KEY or not settings.SHOPIFY_APP_API_SECRET:
          raise ImproperlyConfigured("SHOPIFY_APP_API_KEY and SHOPIFY_APP_API_SECRET must be set in settings")
      shopify.Session.setup(api_key=settings.SHOPIFY_APP_API_KEY, secret=settings.SHOPIFY_APP_API_SECRET)
docs: Initialise the Shopify session with the Shopify App's API credentials.