code: def cache_control_expires(num_hours):
      
      num_seconds = int(num_hours * 60 * 60)
  
      def decorator(func):
          @wraps(func)
          def inner(request, *args, **kwargs):
              response = func(request, *args, **kwargs)
              patch_response_headers(response, num_seconds)
              return response
  
          return inner
  
      return decorator
docs: Set the appropriate Cache-Control and Expires headers for the given
      number of hours.