How to use this lib to buy token on Arbitrum?

[winktool]

Thanks~

  const pool = await getPool(
    v5Provider,
    unitToken,
    targetToken,
    FeeAmount.HIGH,
    86185620
  );

  const trade = await V3Trade.fromRoute(
    new RouteV3([pool], unitToken, targetToken),
    CurrencyAmount.fromRawAmount(
      unitToken,
      ethers.parseEther(amount).toString()
    ),
    TradeType.EXACT_INPUT
  );
  console.log("trade", trade);

  const permit = makePermit(
    unitToken.address,
    ethers.parseUnits(amount, decimals).toString(),
    nonce,
    ROUTER_ADDRESS
  );
  const signature = await generatePermitSignature(
    permit,
    signer,
    chainId,
    "0x0000000000000000000000000000000000000002"
  );

  const methodParameters = SwapRouterUniversal.swapERC20CallParameters(
    buildTrade([trade]),
    {
      slippageTolerance: new Percent(25, 100),
      deadlineOrPreviousBlockhash: Math.floor(Date.now() / 1000) + 60 * 2,
      inputTokenPermit: toInputPermit(signature, permit),
    }
  );

[Vuong-Dao]

Hello, Could I have an example for swaping a token by using this sdk?