code: def update_course(self, course, enterprise_customer, enterprise_context):
          
          course['course_runs'] = self.update_course_runs(
              course_runs=course.get('course_runs') or [],
              enterprise_customer=enterprise_customer,
              enterprise_context=enterprise_context,
          )
  
          # Update marketing urls in course metadata to include enterprise related info (i.e. our global context).
          marketing_url = course.get('marketing_url')
          if marketing_url:
              query_parameters = dict(enterprise_context, **utils.get_enterprise_utm_context(enterprise_customer))
              course.update({'marketing_url': utils.update_query_parameters(marketing_url, query_parameters)})
  
          # Finally, add context to the course as a whole.
          course.update(enterprise_context)
          return course
docs: Update course metadata of the given course and return updated course.
  
          Arguments:
              course (dict): Course Metadata returned by course catalog API
              enterprise_customer (EnterpriseCustomer): enterprise customer instance.
              enterprise_context (dict): Enterprise context to be added to course runs and URLs..
  
          Returns:
              (dict): Updated course metadata