docs: def process_post_media_attachment(self, bulk_mode, api_media_attachment):
          """
          Create or update a Media attached to a post.
  
          :param bulk_mode: If True, minimize db operations by bulk creating post objects
          :param api_media_attachment: the API data for the Media
          :return: the Media attachment object
          """
          attachment = None
  
          # try to get from the ref data map if in bulk mode
          if bulk_mode:
              attachment = self.ref_data_map["media"].get(api_media_attachment["ID"])
  
          # double check the db before giving up, we may have sync'd it in a previous run
          if not attachment:
              # do a direct db lookup if we're not in bulk mode
              attachment, created = self.get_or_create_media(api_media_attachment)
              if attachment and not created:
                  self.update_existing_media(attachment, api_media_attachment)
  
              # add to ref data map so later lookups work
              if attachment:
                  self.ref_data_map["media"][api_media_attachment["ID"]] = attachment
  
          return attachment