code: def get_course_and_course_run(self, course_run_id):
          
          # Parse the course ID from the course run ID.
          course_id = parse_course_key(course_run_id)
          # Retrieve the course metadata from the catalog service.
          course = self.get_course_details(course_id)
  
          course_run = None
          if course:
              # Find the specified course run.
              course_run = None
              course_runs = [course_run for course_run in course['course_runs'] if course_run['key'] == course_run_id]
              if course_runs:
                  course_run = course_runs[0]
  
          return course, course_run
docs: Return the course and course run metadata for the given course run ID.
  
          Arguments:
              course_run_id (str): The course run ID.
  
          Returns:
              tuple: The course metadata and the course run metadata.