Confirm the temporary avatar image previously uploaded with the specified cropping.

        After a successful registry with :py:meth:`create_temp_user_avatar`, use this method to confirm the avatar for
        use. The final avatar can be a subarea of the uploaded image, which is customized with the
        ``cropping_properties``: the return value of :py:meth:`create_temp_user_avatar` should be used for this
        argument.

        :param user: the user to confirm the avatar for
        :type user: str
        :param cropping_properties: a dict of cropping properties from :py:meth:`create_temp_user_avatar`
        :type cropping_properties: Dict[str,Any]

def confirm_user_avatar(self, user, cropping_properties):
        """Confirm the temporary avatar image previously uploaded with the specified cropping.

        After a successful registry with :py:meth:`create_temp_user_avatar`, use this method to confirm the avatar for
        use. The final avatar can be a subarea of the uploaded image, which is customized with the
        ``cropping_properties``: the return value of :py:meth:`create_temp_user_avatar` should be used for this
        argument.

        :param user: the user to confirm the avatar for
        :type user: str
        :param cropping_properties: a dict of cropping properties from :py:meth:`create_temp_user_avatar`
        :type cropping_properties: Dict[str,Any]
        """
        data = cropping_properties
        url = self._get_url('user/avatar')
        r = self._session.post(url, params={'username': user},
                               data=json.dumps(data))

        return json_loads(r)