async def set_notification_level(self, level):
await self._client.set_conversation_notification_level(<EOL>hangouts_pb2.SetConversationNotificationLevelRequest(<EOL>request_header=self._client.get_request_header(),<EOL>conversation_id=hangouts_pb2.ConversationId(id=self.id_),<EOL>level=level,<EOL>)<EOL>)<EOL>
Set the notification level of this conversation.

        Args:
            level: ``NOTIFICATION_LEVEL_QUIET`` to disable notifications, or
                ``NOTIFICATION_LEVEL_RING`` to enable them.

        Raises:
            .NetworkError: If the request fails.