Commissioni di trasferimento

import {
  lamports,
  createClient,
  generateKeyPairSigner,
  unwrapOption
} from "@solana/kit";
import { solanaRpc, rpcAirdrop } from "@solana/kit-plugin-rpc";
import { generatedPayer, airdropPayer } from "@solana/kit-plugin-signer";
import { getCreateAccountInstruction } from "@solana-program/system";
import {
  extension,
  fetchMint,
  fetchToken,
  findAssociatedTokenPda,
  getCreateAssociatedTokenInstructionAsync,
  getHarvestWithheldTokensToMintInstruction,
  getInitializeMintInstruction,
  getInitializeTransferFeeConfigInstruction,
  getMintSize,
  getMintToCheckedInstruction,
  getSetTransferFeeInstruction,
  getTransferCheckedWithFeeInstruction,
  getWithdrawWithheldTokensFromAccountsInstruction,
  getWithdrawWithheldTokensFromMintInstruction,
  isExtension,
  TOKEN_2022_PROGRAM_ADDRESS
} from "@solana-program/token-2022";

const client = await createClient()
  .use(generatedPayer())
  .use(
    solanaRpc({
      rpcUrl: "http://localhost:8899",
      rpcSubscriptionsUrl: "ws://localhost:8900"
    })
  )
  .use(rpcAirdrop())
  .use(airdropPayer(lamports(1_000_000_000n)));

const mint = await generateKeyPairSigner();
const recipientA = await generateKeyPairSigner();
const recipientB = await generateKeyPairSigner();
const feeReceiver = await generateKeyPairSigner();

const transferFeeConfigExtension = extension("TransferFeeConfig", {
  transferFeeConfigAuthority: client.payer.address,
  withdrawWithheldAuthority: client.payer.address,
  withheldAmount: 0n,
  olderTransferFee: {
    epoch: 0n,
    maximumFee: 10n,
    transferFeeBasisPoints: 150
  },
  newerTransferFee: {
    epoch: 0n,
    maximumFee: 10n,
    transferFeeBasisPoints: 150
  }
});
const mintSpace = BigInt(getMintSize([transferFeeConfigExtension]));
const mintRent = await client.rpc
  .getMinimumBalanceForRentExemption(mintSpace)
  .send();

await client.sendTransaction([
  getCreateAccountInstruction({
    payer: client.payer, // Account funding account creation.
    newAccount: mint, // New mint account to create.
    lamports: mintRent, // Lamports funding the mint account rent.
    space: mintSpace, // Account size in bytes for the mint plus TransferFeeConfig.
    programAddress: TOKEN_2022_PROGRAM_ADDRESS // Program that owns the mint account.
  }),
  getInitializeTransferFeeConfigInstruction({
    mint: mint.address, // Mint account that stores the TransferFeeConfig extension.
    transferFeeConfigAuthority: client.payer.address, // Authority allowed to update the transfer fee later.
    withdrawWithheldAuthority: client.payer.address, // Value stored in the mint's `withdraw_withheld_authority` field.
    transferFeeBasisPoints: 150, // Transfer fee in basis points.
    maximumFee: 10n // Maximum fee charged on each transfer.
  }),
  getInitializeMintInstruction({
    mint: mint.address, // Mint account to initialize.
    decimals: 2, // Number of decimals for the token.
    mintAuthority: client.payer.address, // Authority allowed to mint new tokens.
    freezeAuthority: client.payer.address // Authority allowed to freeze token accounts.
  })
]);

const [sourceToken] = await findAssociatedTokenPda({
  mint: mint.address,
  owner: client.payer.address,
  tokenProgram: TOKEN_2022_PROGRAM_ADDRESS
});

const [destinationAToken] = await findAssociatedTokenPda({
  mint: mint.address,
  owner: recipientA.address,
  tokenProgram: TOKEN_2022_PROGRAM_ADDRESS
});

const [destinationBToken] = await findAssociatedTokenPda({
  mint: mint.address,
  owner: recipientB.address,
  tokenProgram: TOKEN_2022_PROGRAM_ADDRESS
});

const [feeReceiverToken] = await findAssociatedTokenPda({
  mint: mint.address,
  owner: feeReceiver.address,
  tokenProgram: TOKEN_2022_PROGRAM_ADDRESS
});

await client.sendTransaction([
  await getCreateAssociatedTokenInstructionAsync({
    payer: client.payer,
    mint: mint.address,
    owner: client.payer.address
  }),
  await getCreateAssociatedTokenInstructionAsync({
    payer: client.payer,
    mint: mint.address,
    owner: recipientA.address
  }),
  await getCreateAssociatedTokenInstructionAsync({
    payer: client.payer,
    mint: mint.address,
    owner: recipientB.address
  }),
  await getCreateAssociatedTokenInstructionAsync({
    payer: client.payer,
    mint: mint.address,
    owner: feeReceiver.address
  }),
  getMintToCheckedInstruction({
    mint: mint.address,
    token: sourceToken,
    mintAuthority: client.payer,
    amount: 1_000n,
    decimals: 2
  })
]);

await client.sendTransaction([
  getTransferCheckedWithFeeInstruction({
    source: sourceToken, // Token account sending the transfer.
    mint: mint.address, // Mint with the transfer fee configuration.
    destination: destinationAToken, // Token account receiving the transfer.
    authority: client.payer, // Signer approving the transfer.
    amount: 200n, // Token amount in base units.
    decimals: 2, // Decimals defined on the mint.
    fee: 3n // Expected transfer fee for this transfer.
  })
]);

await client.sendTransaction([
  getWithdrawWithheldTokensFromAccountsInstruction({
    mint: mint.address, // Mint with the transfer fee configuration.
    feeReceiver: feeReceiverToken, // Token account receiving the withdrawn fees.
    withdrawWithheldAuthority: client.payer, // Signer matching the mint's `withdraw_withheld_authority`.
    numTokenAccounts: 1, // Number of token accounts listed in `sources`.
    sources: [destinationAToken] // Token accounts to withdraw withheld fees from.
  })
]);

await client.sendTransaction([
  getTransferCheckedWithFeeInstruction({
    source: sourceToken, // Token account sending the transfer.
    mint: mint.address, // Mint with the transfer fee configuration.
    destination: destinationBToken, // Token account receiving the transfer.
    authority: client.payer, // Signer approving the transfer.
    amount: 200n, // Token amount in base units.
    decimals: 2, // Decimals defined on the mint.
    fee: 3n // Expected transfer fee for this transfer.
  })
]);

await client.sendTransaction([
  getHarvestWithheldTokensToMintInstruction({
    mint: mint.address, // Mint that collects harvested withheld fees.
    sources: [destinationBToken] // Token accounts to harvest withheld fees from.
  })
]);

await client.sendTransaction([
  getWithdrawWithheldTokensFromMintInstruction({
    mint: mint.address, // Mint storing harvested withheld fees.
    feeReceiver: feeReceiverToken, // Token account receiving withdrawn fees.
    withdrawWithheldAuthority: client.payer // Signer matching the mint's `withdraw_withheld_authority`.
  }),
  getSetTransferFeeInstruction({
    mint: mint.address, // Mint whose next transfer fee configuration is updated.
    transferFeeConfigAuthority: client.payer, // Signer authorized to update the transfer fee later.
    transferFeeBasisPoints: 250, // New transfer fee in basis points.
    maximumFee: 25n // New maximum fee for the next transfer fee configuration.
  })
]);

const destinationAAccount = await fetchToken(client.rpc, destinationAToken);
const destinationBAccount = await fetchToken(client.rpc, destinationBToken);
const feeReceiverAccount = await fetchToken(client.rpc, feeReceiverToken);
const mintAccount = await fetchMint(client.rpc, mint.address);
const transferFeeConfig = (
  unwrapOption(mintAccount.data.extensions) ?? []
).find((item) => isExtension("TransferFeeConfig", item));

console.log("Mint Address:", mint.address);
console.dir(
  {
    destinationA: {
      amount: destinationAAccount.data.amount,
      extensions: destinationAAccount.data.extensions
    },
    destinationB: {
      amount: destinationBAccount.data.amount,
      extensions: destinationBAccount.data.extensions
    },
    feeReceiver: {
      amount: feeReceiverAccount.data.amount,
      extensions: feeReceiverAccount.data.extensions
    },
    transferFeeConfig
  },
  { depth: null }
);

import {
  Connection,
  Keypair,
  LAMPORTS_PER_SOL,
  sendAndConfirmTransaction,
  SystemProgram,
  Transaction
} from "@solana/web3.js";
import {
  ASSOCIATED_TOKEN_PROGRAM_ID,
  ExtensionType,
  createAssociatedTokenAccountInstruction,
  createHarvestWithheldTokensToMintInstruction,
  createInitializeMintInstruction,
  createInitializeTransferFeeConfigInstruction,
  createMintToCheckedInstruction,
  createSetTransferFeeInstruction,
  createTransferCheckedWithFeeInstruction,
  createWithdrawWithheldTokensFromAccountsInstruction,
  createWithdrawWithheldTokensFromMintInstruction,
  getAccount,
  getAssociatedTokenAddressSync,
  getMint,
  getMintLen,
  getTransferFeeAmount,
  getTransferFeeConfig,
  TOKEN_2022_PROGRAM_ID
} from "@solana/spl-token";

const connection = new Connection("http://localhost:8899", "confirmed");
const latestBlockhash = await connection.getLatestBlockhash();

const feePayer = Keypair.generate();
const recipientA = Keypair.generate();
const recipientB = Keypair.generate();
const feeReceiver = Keypair.generate();
const airdropSignature = await connection.requestAirdrop(
  feePayer.publicKey,
  5 * LAMPORTS_PER_SOL
);
await connection.confirmTransaction({
  blockhash: latestBlockhash.blockhash,
  lastValidBlockHeight: latestBlockhash.lastValidBlockHeight,
  signature: airdropSignature
});

const mint = Keypair.generate();
const transferFeeConfigExtensions = [ExtensionType.TransferFeeConfig];
const mintLen = getMintLen(transferFeeConfigExtensions);
const mintRent = await connection.getMinimumBalanceForRentExemption(mintLen);

const sourceToken = getAssociatedTokenAddressSync(
  mint.publicKey,
  feePayer.publicKey,
  false,
  TOKEN_2022_PROGRAM_ID,
  ASSOCIATED_TOKEN_PROGRAM_ID
);

const destinationAToken = getAssociatedTokenAddressSync(
  mint.publicKey,
  recipientA.publicKey,
  false,
  TOKEN_2022_PROGRAM_ID,
  ASSOCIATED_TOKEN_PROGRAM_ID
);

const destinationBToken = getAssociatedTokenAddressSync(
  mint.publicKey,
  recipientB.publicKey,
  false,
  TOKEN_2022_PROGRAM_ID,
  ASSOCIATED_TOKEN_PROGRAM_ID
);

const feeReceiverToken = getAssociatedTokenAddressSync(
  mint.publicKey,
  feeReceiver.publicKey,
  false,
  TOKEN_2022_PROGRAM_ID,
  ASSOCIATED_TOKEN_PROGRAM_ID
);

await sendAndConfirmTransaction(
  connection,
  new Transaction().add(
    SystemProgram.createAccount({
      fromPubkey: feePayer.publicKey, // Account funding account creation.
      newAccountPubkey: mint.publicKey, // New mint account to create.
      lamports: mintRent, // Lamports funding the mint account rent.
      space: mintLen, // Account size in bytes for the mint plus TransferFeeConfig.
      programId: TOKEN_2022_PROGRAM_ID // Program that owns the mint account.
    }),
    createInitializeTransferFeeConfigInstruction(
      mint.publicKey, // Mint account that stores the TransferFeeConfig extension.
      feePayer.publicKey, // Authority allowed to update the transfer fee later.
      feePayer.publicKey, // Value stored in the mint's `withdraw_withheld_authority` field.
      150, // Transfer fee in basis points.
      10n, // Maximum fee charged on each transfer.
      TOKEN_2022_PROGRAM_ID // Token program that owns the mint.
    ),
    createInitializeMintInstruction(
      mint.publicKey, // Mint account to initialize.
      2, // Number of decimals for the token.
      feePayer.publicKey, // Authority allowed to mint new tokens.
      feePayer.publicKey, // Authority allowed to freeze token accounts.
      TOKEN_2022_PROGRAM_ID // Program that owns the mint account.
    )
  ),
  [feePayer, mint],
  { commitment: "confirmed" }
);

await sendAndConfirmTransaction(
  connection,
  new Transaction().add(
    createAssociatedTokenAccountInstruction(
      feePayer.publicKey,
      sourceToken,
      feePayer.publicKey,
      mint.publicKey,
      TOKEN_2022_PROGRAM_ID,
      ASSOCIATED_TOKEN_PROGRAM_ID
    ),
    createAssociatedTokenAccountInstruction(
      feePayer.publicKey,
      destinationAToken,
      recipientA.publicKey,
      mint.publicKey,
      TOKEN_2022_PROGRAM_ID,
      ASSOCIATED_TOKEN_PROGRAM_ID
    ),
    createAssociatedTokenAccountInstruction(
      feePayer.publicKey,
      destinationBToken,
      recipientB.publicKey,
      mint.publicKey,
      TOKEN_2022_PROGRAM_ID,
      ASSOCIATED_TOKEN_PROGRAM_ID
    ),
    createAssociatedTokenAccountInstruction(
      feePayer.publicKey,
      feeReceiverToken,
      feeReceiver.publicKey,
      mint.publicKey,
      TOKEN_2022_PROGRAM_ID,
      ASSOCIATED_TOKEN_PROGRAM_ID
    ),
    createMintToCheckedInstruction(
      mint.publicKey,
      sourceToken,
      feePayer.publicKey,
      1_000,
      2,
      [],
      TOKEN_2022_PROGRAM_ID
    )
  ),
  [feePayer],
  { commitment: "confirmed" }
);

await sendAndConfirmTransaction(
  connection,
  new Transaction().add(
    createTransferCheckedWithFeeInstruction(
      sourceToken, // Token account sending the transfer.
      mint.publicKey, // Mint with the transfer fee configuration.
      destinationAToken, // Token account receiving the transfer.
      feePayer.publicKey, // Signer approving the transfer.
      200n, // Token amount in base units.
      2, // Decimals defined on the mint.
      3n, // Expected transfer fee for this transfer.
      [], // Additional multisig signers.
      TOKEN_2022_PROGRAM_ID // Token program that processes the transfer.
    )
  ),
  [feePayer],
  { commitment: "confirmed" }
);

await sendAndConfirmTransaction(
  connection,
  new Transaction().add(
    createWithdrawWithheldTokensFromAccountsInstruction(
      mint.publicKey, // Mint with the transfer fee configuration.
      feeReceiverToken, // Token account receiving the withdrawn fees.
      feePayer.publicKey, // Signer matching the mint's `withdraw_withheld_authority`.
      [], // Additional multisig signers.
      [destinationAToken], // Token accounts to withdraw withheld fees from.
      TOKEN_2022_PROGRAM_ID // Token program that processes the withdraw.
    )
  ),
  [feePayer],
  { commitment: "confirmed" }
);

await sendAndConfirmTransaction(
  connection,
  new Transaction().add(
    createTransferCheckedWithFeeInstruction(
      sourceToken, // Token account sending the transfer.
      mint.publicKey, // Mint with the transfer fee configuration.
      destinationBToken, // Token account receiving the transfer.
      feePayer.publicKey, // Signer approving the transfer.
      200n, // Token amount in base units.
      2, // Decimals defined on the mint.
      3n, // Expected transfer fee for this transfer.
      [], // Additional multisig signers.
      TOKEN_2022_PROGRAM_ID // Token program that processes the transfer.
    )
  ),
  [feePayer],
  { commitment: "confirmed" }
);

await sendAndConfirmTransaction(
  connection,
  new Transaction().add(
    createHarvestWithheldTokensToMintInstruction(
      mint.publicKey, // Mint that collects harvested withheld fees.
      [destinationBToken], // Token accounts to harvest withheld fees from.
      TOKEN_2022_PROGRAM_ID // Token program that processes the harvest.
    )
  ),
  [feePayer],
  { commitment: "confirmed" }
);

await sendAndConfirmTransaction(
  connection,
  new Transaction().add(
    createWithdrawWithheldTokensFromMintInstruction(
      mint.publicKey, // Mint storing harvested withheld fees.
      feeReceiverToken, // Token account receiving withdrawn fees.
      feePayer.publicKey, // Signer matching the mint's `withdraw_withheld_authority`.
      [], // Additional multisig signers.
      TOKEN_2022_PROGRAM_ID // Token program that processes the withdraw.
    ),
    createSetTransferFeeInstruction(
      mint.publicKey, // Mint whose next transfer fee configuration is updated.
      feePayer.publicKey, // Authority allowed to update the transfer fee later.
      [], // Additional multisig signers.
      250, // New transfer fee in basis points.
      25n, // New maximum fee for the next transfer fee configuration.
      TOKEN_2022_PROGRAM_ID // Token program that owns the mint.
    )
  ),
  [feePayer],
  { commitment: "confirmed" }
);

const destinationAAccount = await getAccount(
  connection,
  destinationAToken,
  "confirmed",
  TOKEN_2022_PROGRAM_ID
);
const destinationBAccount = await getAccount(
  connection,
  destinationBToken,
  "confirmed",
  TOKEN_2022_PROGRAM_ID
);
const feeReceiverAccount = await getAccount(
  connection,
  feeReceiverToken,
  "confirmed",
  TOKEN_2022_PROGRAM_ID
);
const mintAccount = await getMint(
  connection,
  mint.publicKey,
  "confirmed",
  TOKEN_2022_PROGRAM_ID
);

console.log("Mint Address:", mint.publicKey.toBase58());
console.log("Destination A Amount:", destinationAAccount.amount.toString());
console.log(
  "Destination A Transfer Fee Amount:",
  getTransferFeeAmount(destinationAAccount)
);
console.log("Destination B Amount:", destinationBAccount.amount.toString());
console.log(
  "Destination B Transfer Fee Amount:",
  getTransferFeeAmount(destinationBAccount)
);
console.log("Fee Receiver Amount:", feeReceiverAccount.amount.toString());
console.log(
  "Fee Receiver Transfer Fee Amount:",
  getTransferFeeAmount(feeReceiverAccount)
);
console.log("Transfer Fee Config:", getTransferFeeConfig(mintAccount));

use anyhow::Result;
use solana_client::nonblocking::rpc_client::RpcClient;
use solana_commitment_config::CommitmentConfig;
use solana_sdk::{
    signature::{Keypair, Signer},
    transaction::Transaction,
};
use solana_system_interface::instruction::create_account;
use spl_associated_token_account_interface::{
    address::get_associated_token_address_with_program_id,
    instruction::create_associated_token_account,
};
use spl_token_2022_interface::{
    extension::{
        transfer_fee::{
            instruction::{
                harvest_withheld_tokens_to_mint, initialize_transfer_fee_config,
                set_transfer_fee, transfer_checked_with_fee,
                withdraw_withheld_tokens_from_accounts, withdraw_withheld_tokens_from_mint,
            },
            TransferFeeAmount, TransferFeeConfig,
        },
        BaseStateWithExtensions, ExtensionType, StateWithExtensions,
    },
    instruction::{initialize_mint, mint_to_checked},
    state::{Account, Mint},
    ID as TOKEN_2022_PROGRAM_ID,
};

#[tokio::main]
async fn main() -> Result<()> {
    let client = RpcClient::new_with_commitment(
        String::from("http://localhost:8899"),
        CommitmentConfig::confirmed(),
    );
    let fee_payer = Keypair::new();
    let recipient_a = Keypair::new();
    let recipient_b = Keypair::new();
    let fee_receiver = Keypair::new();
    let decimals = 2;
    let airdrop_signature = client
        .request_airdrop(&fee_payer.pubkey(), 5_000_000_000)
        .await?;

    loop {
        let confirmed = client.confirm_transaction(&airdrop_signature).await?;
        if confirmed {
            break;
        }
    }

    let mint = Keypair::new();
    let mint_space =
        ExtensionType::try_calculate_account_len::<Mint>(&[ExtensionType::TransferFeeConfig])?;

    let mint_rent = client
        .get_minimum_balance_for_rent_exemption(mint_space)
        .await?;

    let mint_blockhash = client.get_latest_blockhash().await?;
    let mint_transaction = Transaction::new_signed_with_payer(
        &[
            create_account(
                &fee_payer.pubkey(), // Account funding account creation.
                &mint.pubkey(), // New mint account to create.
                mint_rent, // Lamports funding the mint account rent.
                mint_space as u64, // Account size in bytes for the mint plus TransferFeeConfig.
                &TOKEN_2022_PROGRAM_ID, // Program that owns the mint account.
            ),
            initialize_transfer_fee_config(
                &TOKEN_2022_PROGRAM_ID, // Token program that owns the mint.
                &mint.pubkey(), // Mint account that stores the TransferFeeConfig extension.
                Some(&fee_payer.pubkey()), // Authority allowed to update the transfer fee later.
                Some(&fee_payer.pubkey()), // Value stored in the mint's `withdraw_withheld_authority` field.
                150, // Transfer fee in basis points.
                10, // Maximum fee charged on each transfer.
            )?,
            initialize_mint(
                &TOKEN_2022_PROGRAM_ID, // Program that owns the mint account.
                &mint.pubkey(), // Mint account to initialize.
                &fee_payer.pubkey(), // Authority allowed to mint new tokens.
                Some(&fee_payer.pubkey()), // Authority allowed to freeze token accounts.
                decimals, // Number of decimals for the token.
            )?,
        ],
        Some(&fee_payer.pubkey()),
        &[&fee_payer, &mint],
        mint_blockhash,
    );

    client.send_and_confirm_transaction(&mint_transaction).await?;

    let source_token_address = get_associated_token_address_with_program_id(
        &fee_payer.pubkey(),
        &mint.pubkey(),
        &TOKEN_2022_PROGRAM_ID,
    );
    let destination_a_token_address = get_associated_token_address_with_program_id(
        &recipient_a.pubkey(),
        &mint.pubkey(),
        &TOKEN_2022_PROGRAM_ID,
    );
    let destination_b_token_address = get_associated_token_address_with_program_id(
        &recipient_b.pubkey(),
        &mint.pubkey(),
        &TOKEN_2022_PROGRAM_ID,
    );
    let fee_receiver_token_address = get_associated_token_address_with_program_id(
        &fee_receiver.pubkey(),
        &mint.pubkey(),
        &TOKEN_2022_PROGRAM_ID,
    );

    let setup_blockhash = client.get_latest_blockhash().await?;
    let setup_transaction = Transaction::new_signed_with_payer(
        &[
            create_associated_token_account(
                &fee_payer.pubkey(),
                &fee_payer.pubkey(),
                &mint.pubkey(),
                &TOKEN_2022_PROGRAM_ID,
            ),
            create_associated_token_account(
                &fee_payer.pubkey(),
                &recipient_a.pubkey(),
                &mint.pubkey(),
                &TOKEN_2022_PROGRAM_ID,
            ),
            create_associated_token_account(
                &fee_payer.pubkey(),
                &recipient_b.pubkey(),
                &mint.pubkey(),
                &TOKEN_2022_PROGRAM_ID,
            ),
            create_associated_token_account(
                &fee_payer.pubkey(),
                &fee_receiver.pubkey(),
                &mint.pubkey(),
                &TOKEN_2022_PROGRAM_ID,
            ),
            mint_to_checked(
                &TOKEN_2022_PROGRAM_ID,
                &mint.pubkey(),
                &source_token_address,
                &fee_payer.pubkey(),
                &[],
                1_000,
                decimals,
            )?,
        ],
        Some(&fee_payer.pubkey()),
        &[&fee_payer],
        setup_blockhash,
    );

    client.send_and_confirm_transaction(&setup_transaction).await?;

    let first_transfer_blockhash = client.get_latest_blockhash().await?;
    let first_transfer_transaction = Transaction::new_signed_with_payer(
        &[
            transfer_checked_with_fee(
                &TOKEN_2022_PROGRAM_ID, // Token program that processes the transfer.
                &source_token_address, // Token account sending the transfer.
                &mint.pubkey(), // Mint with the transfer fee configuration.
                &destination_a_token_address, // Token account receiving the transfer.
                &fee_payer.pubkey(), // Signer approving the transfer.
                &[], // Additional multisig signers.
                200, // Token amount in base units.
                decimals, // Decimals defined on the mint.
                3, // Expected transfer fee for this transfer.
            )?,
        ],
        Some(&fee_payer.pubkey()),
        &[&fee_payer],
        first_transfer_blockhash,
    );
    client
        .send_and_confirm_transaction(&first_transfer_transaction)
        .await?;

    let withdraw_accounts_blockhash = client.get_latest_blockhash().await?;
    let withdraw_accounts_transaction = Transaction::new_signed_with_payer(
        &[
            withdraw_withheld_tokens_from_accounts(
                &TOKEN_2022_PROGRAM_ID, // Token program that processes the withdraw.
                &mint.pubkey(), // Mint with the transfer fee configuration.
                &fee_receiver_token_address, // Token account receiving withdrawn fees.
                &fee_payer.pubkey(), // Signer matching the mint's `withdraw_withheld_authority`.
                &[], // Additional multisig signers.
                &[&destination_a_token_address], // Token accounts to withdraw withheld fees from.
            )?,
        ],
        Some(&fee_payer.pubkey()),
        &[&fee_payer],
        withdraw_accounts_blockhash,
    );
    client
        .send_and_confirm_transaction(&withdraw_accounts_transaction)
        .await?;

    let second_transfer_blockhash = client.get_latest_blockhash().await?;
    let second_transfer_transaction = Transaction::new_signed_with_payer(
        &[
            transfer_checked_with_fee(
                &TOKEN_2022_PROGRAM_ID, // Token program that processes the transfer.
                &source_token_address, // Token account sending the transfer.
                &mint.pubkey(), // Mint with the transfer fee configuration.
                &destination_b_token_address, // Token account receiving the transfer.
                &fee_payer.pubkey(), // Signer approving the transfer.
                &[], // Additional multisig signers.
                200, // Token amount in base units.
                decimals, // Decimals defined on the mint.
                3, // Expected transfer fee for this transfer.
            )?,
        ],
        Some(&fee_payer.pubkey()),
        &[&fee_payer],
        second_transfer_blockhash,
    );
    client
        .send_and_confirm_transaction(&second_transfer_transaction)
        .await?;

    let harvest_blockhash = client.get_latest_blockhash().await?;
    let harvest_transaction = Transaction::new_signed_with_payer(
        &[
            harvest_withheld_tokens_to_mint(
                &TOKEN_2022_PROGRAM_ID, // Token program that processes the harvest.
                &mint.pubkey(), // Mint that collects harvested withheld fees.
                &[&destination_b_token_address], // Token accounts to harvest withheld fees from.
            )?,
        ],
        Some(&fee_payer.pubkey()),
        &[&fee_payer],
        harvest_blockhash,
    );
    client.send_and_confirm_transaction(&harvest_transaction).await?;

    let finalize_blockhash = client.get_latest_blockhash().await?;
    let finalize_transaction = Transaction::new_signed_with_payer(
        &[
            withdraw_withheld_tokens_from_mint(
                &TOKEN_2022_PROGRAM_ID, // Token program that processes the withdraw.
                &mint.pubkey(), // Mint storing harvested withheld fees.
                &fee_receiver_token_address, // Token account receiving withdrawn fees.
                &fee_payer.pubkey(), // Signer matching the mint's `withdraw_withheld_authority`.
                &[], // Additional multisig signers.
            )?,
            set_transfer_fee(
                &TOKEN_2022_PROGRAM_ID, // Token program that owns the mint.
                &mint.pubkey(), // Mint whose next transfer fee configuration is updated.
                &fee_payer.pubkey(), // Authority allowed to update the transfer fee later.
                &[], // Additional multisig signers.
                250, // New transfer fee in basis points.
                25, // New maximum fee for the next transfer fee configuration.
            )?,
        ],
        Some(&fee_payer.pubkey()),
        &[&fee_payer],
        finalize_blockhash,
    );
    client.send_and_confirm_transaction(&finalize_transaction).await?;

    let destination_a_account = client.get_account(&destination_a_token_address).await?;
    let destination_a_state = StateWithExtensions::<Account>::unpack(&destination_a_account.data)?;
    let destination_b_account = client.get_account(&destination_b_token_address).await?;
    let destination_b_state = StateWithExtensions::<Account>::unpack(&destination_b_account.data)?;
    let fee_receiver_account = client.get_account(&fee_receiver_token_address).await?;
    let fee_receiver_state = StateWithExtensions::<Account>::unpack(&fee_receiver_account.data)?;
    let mint_account = client.get_account(&mint.pubkey()).await?;
    let mint_state = StateWithExtensions::<Mint>::unpack(&mint_account.data)?;

    println!("Mint: {}", mint.pubkey());
    println!("Destination A Balance: {}", destination_a_state.base.amount);
    println!(
        "Destination A Transfer Fee Amount: {:#?}",
        destination_a_state.get_extension::<TransferFeeAmount>()?
    );
    println!("Destination B Balance: {}", destination_b_state.base.amount);
    println!(
        "Destination B Transfer Fee Amount: {:#?}",
        destination_b_state.get_extension::<TransferFeeAmount>()?
    );
    println!("Fee Receiver Balance: {}", fee_receiver_state.base.amount);
    println!(
        "Fee Receiver Transfer Fee Amount: {:#?}",
        fee_receiver_state.get_extension::<TransferFeeAmount>()?
    );
    println!(
        "Transfer Fee Config: {:#?}",
        mint_state.get_extension::<TransferFeeConfig>()?
    );

    Ok(())
}