docs: def process_post_tags(self, bulk_mode, api_post, post_tags):
          """
          Create or update Tags related to a post.
  
          :param bulk_mode: If True, minimize db operations by bulk creating post objects
          :param api_post: the API data for the post
          :param post_tags: a mapping of Tags keyed by post ID
          :return: None
          """
          post_tags[api_post["ID"]] = []
          for api_tag in six.itervalues(api_post["tags"]):
              tag = self.process_post_tag(bulk_mode, api_tag)
              if tag:
                  post_tags[api_post["ID"]].append(tag)