message: <str>
            image: <file> as object_attachment
            owner_id: <str>

def get_api_publisher(self, social_user):
        """
            message: <str>
            image: <file> as object_attachment
            owner_id: <str>
        """

        def _post(owner_id=None, **kwargs):
            api = self.get_api(social_user, owner_id)
            return api.post('{}/feed'.format(owner_id or 'me'), params=kwargs)

        return _post