code: def transmit_content_metadata(username, channel_code, channel_pk):
      
      start = time.time()
      api_user = User.objects.get(username=username)
      integrated_channel = INTEGRATED_CHANNEL_CHOICES[channel_code].objects.get(pk=channel_pk)
      LOGGER.info('Transmitting content metadata to integrated channel using configuration: [%s]', integrated_channel)
      try:
          integrated_channel.transmit_content_metadata(api_user)
      except Exception:  # pylint: disable=broad-except
          LOGGER.exception(
              'Transmission of content metadata failed for user [%s] and for integrated '
              'channel with code [%s] and id [%s].', username, channel_code, channel_pk
          )
      duration = time.time() - start
      LOGGER.info(
          'Content metadata transmission task for integrated channel configuration [%s] took [%s] seconds',
          integrated_channel,
          duration
      )
docs: Task to send content metadata to each linked integrated channel.
  
      Arguments:
          username (str): The username of the User to be used for making API requests to retrieve content metadata.
          channel_code (str): Capitalized identifier for the integrated channel.
          channel_pk (str): Primary key for identifying integrated channel.