def METHOD_NAME(self, post, author_dict):
    """
    This is a temporary workaround for mobile app. They should use our new approach
    which is attaches the whole user info in the `original_creator` attribute. This is not
    used by the webapp
    """
    if not self._is_mobile_app():
        return
    # by now, the original_creator has been set for a syndicated_in post
    # so we are fine when using original_creator instead of syndicated_creator
    creator = author_dict
    if not post.get('byline') and isinstance(creator, dict):
        byline = creator.get('byline')
        if not byline:
            byline = creator.get('display_name')
        post['byline'] = byline