How to use the matrix-bot-sdk.AutojoinRoomsMixin.setupOnClient function in matrix-bot-sdk

}

  // We'll want to make sure the bot doesn't have to do an initial sync every
  // time it restarts, so we need to prepare a storage provider. Here we use
  // a simple JSON database.
  const storage = new SimpleFsStorageProvider(
    path.join(storageDir, "matrix.json")
  );

  // Now we can create the client and set it up to automatically join rooms.
  const client = new MatrixClient(
    config.homeserverUrl,
    config.accessToken,
    storage
  );
  AutojoinRoomsMixin.setupOnClient(client);

  // We also want to make sure we can receive events - this is where we will
  // handle our command.
  client.on("room.message", makeHandleCommand(client, config));

  // Now that the client is all set up and the event handler is registered, start the
  // client up. This will start it syncing.
  await client.start();
  console.log("Client started!");
}

(async function () {
    const storage = new SimpleFsStorageProvider(path.join(config.dataPath, "bot.json"));

    let client: MatrixClient;
    if (config.pantalaimon.use) {
        const pantalaimon = new PantalaimonClient(config.homeserverUrl, storage);
        client = await pantalaimon.createClientWithCredentials(config.pantalaimon.username, config.pantalaimon.password);
    } else {
        client = new MatrixClient(config.homeserverUrl, config.accessToken, storage);
    }

    if (config.autojoin) {
        AutojoinRoomsMixin.setupOnClient(client);
    }

    const banLists: BanList[] = [];
    const protectedRooms: { [roomId: string]: string } = {};

    const joinedRooms = await client.getJoinedRooms();

    // Ensure we're also joined to the rooms we're protecting
    for (const roomRef of config.protectedRooms) {
        const permalink = Permalinks.parseUrl(roomRef);
        if (!permalink.roomIdOrAlias) continue;

        let roomId = await client.resolveRoom(permalink.roomIdOrAlias);
        if (!joinedRooms.includes(roomId)) {
            roomId = await client.joinRoom(permalink.roomIdOrAlias, permalink.viaServers);
        }