Apa Itu Ekstensi Grup dan Anggota Grup?
Grup adalah mint yang mewakili koleksi. Anggota grup adalah mint yang termasuk dalam koleksi tersebut.
Gunakan ekstensi ini ketika satu mint harus mewakili koleksi dan mint lainnya harus mewakili item yang termasuk di dalamnya.
Token Extensions Program dapat menyimpan data grup token langsung pada mint dengan empat ekstensi terkait:
GroupPointermengarahkan mint ke akun yang menyimpan data grup.TokenGroupmenyimpan data grup itu sendiri, termasuk otoritas pembaruan, ukuran saat ini, dan ukuran maksimum.GroupMemberPointermengarahkan mint ke akun yang menyimpan data anggota.TokenGroupMembermenyimpan alamat grup anggota dan nomor anggota.
GroupPointer dan GroupMemberPointer dapat mereferensikan akun apa
pun yang dimiliki oleh program yang mengimplementasikan
antarmuka Token group.
Token Extensions Program juga mengimplementasikan antarmuka tersebut secara
langsung melalui ekstensi mint TokenGroup dan TokenGroupMember.
Cara Membuat Grup dan Anggota yang Disimpan pada Akun Mint
Untuk membuat grup dan anggota yang disimpan pada akun mint:
- Buat akun mint grup dan inisialisasi
GroupPointer. - Inisialisasi mint grup dengan
InitializeMint. - Inisialisasi
TokenGrouppada mint yang sama. - Buat akun mint anggota dan inisialisasi
GroupMemberPointer. - Inisialisasi mint anggota dengan
InitializeMint. - Inisialisasi
TokenGroupMemberpada mint yang sama sehingga mereferensikan mint grup.
Hitung ukuran mint grup dan rent
Hitung ukuran dan rent yang diperlukan untuk mint grup.
Buat dan Inisialisasi Mint Grup
Buat akun mint grup, inisialisasi GroupPointer, inisialisasi mint, dan
inisialisasi TokenGroup dalam satu transaksi.
Hitung ukuran mint anggota dan rent
Hitung ukuran dan rent yang diperlukan untuk mint anggota.
Buat dan Inisialisasi Mint Anggota
Buat akun mint anggota, inisialisasi GroupMemberPointer, inisialisasi
mint, dan inisialisasi TokenGroupMember dalam satu transaksi.
Pointer dan Urutan Instruksi
GroupPointer dan GroupMemberPointer menyimpan alamat akun
tempat data grup atau anggota berada. TokenGroup dan
TokenGroupMember menyimpan data grup atau anggota yang sebenarnya.
GroupPointerInstruction::Initialize dan
GroupMemberPointerInstruction::Initialize harus dilakukan sebelum
InitializeMint. TokenGroupInstruction::InitializeGroup dan
TokenGroupInstruction::InitializeMember harus dilakukan setelah
InitializeMint. Untuk setiap mint, CreateAccount, instruksi
inisialisasi pointer, dan InitializeMint harus disertakan dalam transaksi
yang sama.
Referensi Sumber
GroupPointer dan GroupMemberPointer adalah instruksi pointer dalam
Token Extensions Program. TokenGroup dan TokenGroupMember mengikuti
antarmuka Token group, yang diimplementasikan oleh Token Extensions Program.
Group Pointer dan Group Member Pointer
| Item | Deskripsi | Sumber |
|---|---|---|
GroupPointer | Ekstensi mint yang menyimpan authority dan alamat untuk akun yang menyimpan data grup. | Sumber |
GroupMemberPointer | Ekstensi mint yang menyimpan authority dan alamat untuk akun yang menyimpan data anggota. | Sumber |
GroupPointerInstruction::Initialize | Menginisialisasi ekstensi group pointer sebelum InitializeMint. | Sumber |
GroupPointerInstruction::Update | Memperbarui alamat grup yang disimpan oleh ekstensi GroupPointer pada mint. | Sumber |
GroupMemberPointerInstruction::Initialize | Menginisialisasi ekstensi group member pointer sebelum InitializeMint. | Sumber |
GroupMemberPointerInstruction::Update | Memperbarui alamat anggota yang disimpan oleh ekstensi GroupMemberPointer pada mint. | Sumber |
process_initialize (GroupPointer) | Menulis authority GroupPointer awal dan alamat grup ke mint. | Sumber |
process_update (GroupPointer) | Memvalidasi authority group pointer, kemudian menulis ulang alamat grup yang tersimpan pada mint. | Sumber |
process_initialize (GroupMemberPointer) | Menulis authority GroupMemberPointer awal dan alamat anggota ke mint. | Sumber |
process_update (GroupMemberPointer) | Memvalidasi authority group member pointer, kemudian menulis ulang alamat anggota yang tersimpan pada mint. | Sumber |
Token Group dan Token Group Member
| Item | Deskripsi | Sumber |
|---|---|---|
TokenGroup | Status interface token group yang disimpan pada mint, termasuk update authority, ukuran saat ini, dan ukuran maksimum. | Sumber |
TokenGroupMember | Status interface token group member yang disimpan pada mint, termasuk member mint, alamat group, dan nomor member. | Sumber |
TokenGroupInstruction::InitializeGroup | Instruksi interface token group yang didukung oleh Token Extensions Program untuk menginisialisasi group baru untuk mint yang sudah diinisialisasi. | Sumber |
TokenGroupInstruction::UpdateGroupMaxSize | Instruksi interface token group yang didukung oleh Token Extensions Program untuk memperbarui jumlah maksimum member yang diizinkan dalam sebuah group. | Sumber |
TokenGroupInstruction::UpdateGroupAuthority | Instruksi interface token group yang didukung oleh Token Extensions Program untuk merotasi atau menghapus update authority group. | Sumber |
TokenGroupInstruction::InitializeMember | Instruksi interface token group yang didukung oleh Token Extensions Program untuk menginisialisasi member baru untuk group yang sudah diinisialisasi. | Sumber |
process_initialize_group | Memvalidasi mint, memeriksa bahwa GroupPointer ada, dan mengalokasikan status TokenGroup pada group mint. | Sumber |
process_update_group_max_size | Memvalidasi update authority saat ini, kemudian memperbarui ukuran maksimum group. | Sumber |
process_update_group_authority | Memvalidasi update authority saat ini, kemudian merotasi atau menghapus update authority group. | Sumber |
process_initialize_member | Memvalidasi member mint dan group authority, menambah ukuran group, dan mengalokasikan status TokenGroupMember pada mint. | Sumber |
Typescript
Contoh Kit di bawah ini menggunakan instruksi yang dihasilkan secara langsung.
Contoh lama menggunakan @solana/web3.js, @solana/spl-token, dan helper grup
token disertakan sebagai referensi.
Kit
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,getInitializeGroupMemberPointerInstruction,getInitializeGroupPointerInstruction,getInitializeMintInstruction,getInitializeTokenGroupInstruction,getInitializeTokenGroupMemberInstruction,getMintSize,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 groupMint = await generateKeyPairSigner();const memberMint = await generateKeyPairSigner();const groupPointerExtension = extension("GroupPointer", {authority: client.payer.address,groupAddress: groupMint.address});const groupExtension = extension("TokenGroup", {updateAuthority: client.payer.address,mint: groupMint.address,size: 0n,maxSize: 10n});const groupMintSpace = BigInt(getMintSize([groupPointerExtension, groupExtension]));const groupMintCreateSpace = BigInt(getMintSize([groupPointerExtension]));const groupMintRent = await client.rpc.getMinimumBalanceForRentExemption(groupMintSpace).send();await client.sendTransaction([getCreateAccountInstruction({payer: client.payer, // Account funding the new mint account.newAccount: groupMint, // New group mint account to create.lamports: groupMintRent, // Lamports funding the mint account rent.space: groupMintCreateSpace, // Account size in bytes for the mint plus GroupPointer.programAddress: TOKEN_2022_PROGRAM_ADDRESS // Program that owns the mint account.}),getInitializeGroupPointerInstruction({mint: groupMint.address, // Mint account that stores the GroupPointer extension.authority: client.payer.address, // Authority allowed to update the group pointer later.groupAddress: groupMint.address // Account address that stores the group data.}),getInitializeMintInstruction({mint: groupMint.address, // Mint account to initialize.decimals: 0, // 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.}),getInitializeTokenGroupInstruction({group: groupMint.address, // Mint account that stores the group data.mint: groupMint.address, // Mint that the group data describes.mintAuthority: client.payer, // Signer authorizing group initialization for the mint.updateAuthority: client.payer.address, // Authority allowed to update the group later.maxSize: 10n // Maximum number of members allowed in the group.})]);const memberPointerExtension = extension("GroupMemberPointer", {authority: client.payer.address,memberAddress: memberMint.address});const memberExtension = extension("TokenGroupMember", {mint: memberMint.address,group: groupMint.address,memberNumber: 1n});const memberMintSpace = BigInt(getMintSize([memberPointerExtension, memberExtension]));const memberMintCreateSpace = BigInt(getMintSize([memberPointerExtension]));const memberMintRent = await client.rpc.getMinimumBalanceForRentExemption(memberMintSpace).send();await client.sendTransaction([getCreateAccountInstruction({payer: client.payer, // Account funding the new mint account.newAccount: memberMint, // New member mint account to create.lamports: memberMintRent, // Lamports funding the mint account rent.space: memberMintCreateSpace, // Account size in bytes for the mint plus GroupMemberPointer.programAddress: TOKEN_2022_PROGRAM_ADDRESS // Program that owns the mint account.}),getInitializeGroupMemberPointerInstruction({mint: memberMint.address, // Mint account that stores the GroupMemberPointer extension.authority: client.payer.address, // Authority allowed to update the member pointer later.memberAddress: memberMint.address // Account address that stores the member data.}),getInitializeMintInstruction({mint: memberMint.address, // Mint account to initialize.decimals: 0, // 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.}),getInitializeTokenGroupMemberInstruction({member: memberMint.address, // Mint account that stores the member data.memberMint: memberMint.address, // Mint that the member data describes.memberMintAuthority: client.payer, // Signer authorizing member initialization for the mint.group: groupMint.address, // Group mint that this member belongs to.groupUpdateAuthority: client.payer // Signer matching the group's update authority.})]);const groupMintAccount = await fetchMint(client.rpc, groupMint.address);const memberMintAccount = await fetchMint(client.rpc, memberMint.address);const groupExtensions = unwrapOption(groupMintAccount.data.extensions) ?? [];const memberExtensions = unwrapOption(memberMintAccount.data.extensions) ?? [];console.log(JSON.stringify({groupMint: groupMint.address,groupPointer: groupExtensions.find((item) =>isExtension("GroupPointer", item)),group: groupExtensions.find((item) => isExtension("TokenGroup", item)),memberMint: memberMint.address,memberPointer: memberExtensions.find((item) =>isExtension("GroupMemberPointer", item)),member: memberExtensions.find((item) =>isExtension("TokenGroupMember", item))},(_, value) => (typeof value === "bigint" ? value.toString() : value),2));
Web3.js
import {Connection,Keypair,Transaction,SystemProgram,LAMPORTS_PER_SOL,sendAndConfirmTransaction} from "@solana/web3.js";import {TOKEN_2022_PROGRAM_ID,ExtensionType,getMintLen,getMint,createInitializeMintInstruction,createInitializeGroupPointerInstruction,createInitializeGroupInstruction,createInitializeGroupMemberPointerInstruction,createInitializeMemberInstruction,getGroupPointerState,getGroupMemberPointerState,getTokenGroupState,getTokenGroupMemberState} from "@solana/spl-token";const connection = new Connection("http://localhost:8899", "confirmed");const authority = Keypair.generate();const airdropSignature = await connection.requestAirdrop(authority.publicKey,5 * LAMPORTS_PER_SOL);await connection.confirmTransaction(airdropSignature, "confirmed");const groupMint = Keypair.generate();const groupPointerExtensions = [ExtensionType.GroupPointer];const spaceWithGroupPointerExtensions = getMintLen(groupPointerExtensions);const groupAndGroupPointerExtensions = [ExtensionType.GroupPointer,ExtensionType.TokenGroup];const spaceWithGroupAndGroupPointerExtensions = getMintLen(groupAndGroupPointerExtensions);const groupMintRent = await connection.getMinimumBalanceForRentExemption(spaceWithGroupAndGroupPointerExtensions);const { blockhash: latestBlockhash } = await connection.getLatestBlockhash();const createGroupMintAccountInstruction = SystemProgram.createAccount({fromPubkey: authority.publicKey, // Account funding the new mint account.newAccountPubkey: groupMint.publicKey, // New group mint account to create.lamports: groupMintRent, // Lamports funding the mint account rent.space: spaceWithGroupPointerExtensions, // Account size in bytes for the mint plus GroupPointer.programId: TOKEN_2022_PROGRAM_ID // Program that owns the mint account.});const initializeGroupPointerInstruction =createInitializeGroupPointerInstruction(groupMint.publicKey, // Mint account that stores the GroupPointer extension.authority.publicKey, // Authority allowed to update the group pointer later.groupMint.publicKey, // Account address that stores the group data.TOKEN_2022_PROGRAM_ID // Program that owns the mint account.);const initializeGroupMintInstruction = createInitializeMintInstruction(groupMint.publicKey, // Mint account to initialize.0, // Number of decimals for the token.authority.publicKey, // Authority allowed to mint new tokens.authority.publicKey, // Authority allowed to freeze token accounts.TOKEN_2022_PROGRAM_ID // Program that owns the mint account.);const initializeGroupInstruction = createInitializeGroupInstruction({programId: TOKEN_2022_PROGRAM_ID, // Token program that owns the mint.group: groupMint.publicKey, // Mint account that stores the group data.mint: groupMint.publicKey, // Mint that the group data describes.mintAuthority: authority.publicKey, // Signer authorizing group initialization for the mint.updateAuthority: authority.publicKey, // Authority allowed to update the group later.maxSize: 10n // Maximum number of members allowed in the group.});const groupTransaction = new Transaction({feePayer: authority.publicKey,recentBlockhash: latestBlockhash}).add(createGroupMintAccountInstruction,initializeGroupPointerInstruction,initializeGroupMintInstruction,initializeGroupInstruction);await sendAndConfirmTransaction(connection,groupTransaction,[authority, groupMint],{commitment: "confirmed",skipPreflight: true});const memberMint = Keypair.generate();const memberPointerExtensions = [ExtensionType.GroupMemberPointer];const spaceWithMemberPointerExtension = getMintLen(memberPointerExtensions);const memberAndMemberPointerExtensions = [ExtensionType.GroupMemberPointer,ExtensionType.TokenGroupMember];const spaceWithMemberAndMemberPointerExtensions = getMintLen(memberAndMemberPointerExtensions);const memberMintRent = await connection.getMinimumBalanceForRentExemption(spaceWithMemberAndMemberPointerExtensions);const { blockhash: memberLatestBlockhash } =await connection.getLatestBlockhash();const createMemberMintAccountInstruction = SystemProgram.createAccount({fromPubkey: authority.publicKey, // Account funding the new mint account.newAccountPubkey: memberMint.publicKey, // New member mint account to create.lamports: memberMintRent, // Lamports funding the mint account rent.space: spaceWithMemberPointerExtension, // Account size in bytes for the mint plus GroupMemberPointer.programId: TOKEN_2022_PROGRAM_ID // Program that owns the mint account.});const initializeMemberPointerInstruction =createInitializeGroupMemberPointerInstruction(memberMint.publicKey, // Mint account that stores the GroupMemberPointer extension.authority.publicKey, // Authority allowed to update the member pointer later.memberMint.publicKey, // Account address that stores the member data.TOKEN_2022_PROGRAM_ID // Program that owns the mint account.);const initializeMemberMintInstruction = createInitializeMintInstruction(memberMint.publicKey, // Mint account to initialize.0, // Number of decimals for the token.authority.publicKey, // Authority allowed to mint new tokens.authority.publicKey, // Authority allowed to freeze token accounts.TOKEN_2022_PROGRAM_ID // Program that owns the mint account.);const initializeMemberInstruction = createInitializeMemberInstruction({programId: TOKEN_2022_PROGRAM_ID, // Token program that owns the mint.member: memberMint.publicKey, // Mint account that stores the member data.memberMint: memberMint.publicKey, // Mint that the member data describes.memberMintAuthority: authority.publicKey, // Signer authorizing member initialization for the mint.group: groupMint.publicKey, // Group mint that this member belongs to.groupUpdateAuthority: authority.publicKey // Signer matching the group's update authority.});const memberTransaction = new Transaction({feePayer: authority.publicKey,recentBlockhash: memberLatestBlockhash}).add(createMemberMintAccountInstruction,initializeMemberPointerInstruction,initializeMemberMintInstruction,initializeMemberInstruction);await sendAndConfirmTransaction(connection,memberTransaction,[authority, memberMint],{commitment: "confirmed",skipPreflight: true});const groupMintAccount = await getMint(connection,groupMint.publicKey,"confirmed",TOKEN_2022_PROGRAM_ID);const memberMintAccount = await getMint(connection,memberMint.publicKey,"confirmed",TOKEN_2022_PROGRAM_ID);console.log(JSON.stringify({groupMint: groupMint.publicKey,groupPointer: getGroupPointerState(groupMintAccount),group: getTokenGroupState(groupMintAccount),memberMint: memberMint.publicKey,memberPointer: getGroupMemberPointerState(memberMintAccount),member: getTokenGroupMemberState(memberMintAccount)},(_, value) => (typeof value === "bigint" ? value.toString() : value),2));
Rust
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_token_2022_interface::{extension::{group_member_pointer::{instruction::initialize as initialize_group_member_pointer, GroupMemberPointer,},group_pointer::{instruction::initialize as initialize_group_pointer, GroupPointer},BaseStateWithExtensions, ExtensionType, StateWithExtensions,},instruction::initialize_mint,state::Mint,ID as TOKEN_2022_PROGRAM_ID,};use spl_token_group_interface::{instruction::{initialize_group, initialize_member},state::{TokenGroup, TokenGroupMember},};#[tokio::main]async fn main() -> Result<()> {let client = RpcClient::new_with_commitment(String::from("http://localhost:8899"),CommitmentConfig::confirmed(),);let authority = Keypair::new();let airdrop_signature = client.request_airdrop(&authority.pubkey(), 5_000_000_000).await?;loop {let confirmed = client.confirm_transaction(&airdrop_signature).await?;if confirmed {break;}}let group_mint = Keypair::new();let group_mint_space =ExtensionType::try_calculate_account_len::<Mint>(&[ExtensionType::GroupPointer])?;let group_mint_space_with_data = ExtensionType::try_calculate_account_len::<Mint>(&[ExtensionType::GroupPointer,ExtensionType::TokenGroup,])?;let group_mint_rent = client.get_minimum_balance_for_rent_exemption(group_mint_space_with_data).await?;let create_group_mint_account_instruction = create_account(&authority.pubkey(), // Account funding the new mint account.&group_mint.pubkey(), // New group mint account to create.group_mint_rent, // Lamports funding the mint account rent.group_mint_space as u64, // Account size in bytes for the mint plus GroupPointer.&TOKEN_2022_PROGRAM_ID, // Program that owns the mint account.);let initialize_group_pointer_instruction = initialize_group_pointer(&TOKEN_2022_PROGRAM_ID,&group_mint.pubkey(), // Mint account that stores the GroupPointer extension.Some(authority.pubkey()), // Authority allowed to update the group pointer later.Some(group_mint.pubkey()), // Account address that stores the group data.)?;let initialize_group_mint_instruction = initialize_mint(&TOKEN_2022_PROGRAM_ID, // Program that owns the mint account.&group_mint.pubkey(), // Mint account to initialize.&authority.pubkey(), // Authority allowed to mint new tokens.Some(&authority.pubkey()), // Authority allowed to freeze token accounts.0, // Number of decimals for the token.)?;let initialize_group_instruction = initialize_group(&TOKEN_2022_PROGRAM_ID, // Program that owns the mint account.&group_mint.pubkey(), // Mint account that stores the group data.&group_mint.pubkey(), // Mint that the group data describes.&authority.pubkey(), // Signer authorizing group initialization for the mint.Some(authority.pubkey()), // Authority allowed to update the group later.10, // Maximum number of members allowed in the group.);let group_transaction = Transaction::new_signed_with_payer(&[create_group_mint_account_instruction,initialize_group_pointer_instruction,initialize_group_mint_instruction,initialize_group_instruction,],Some(&authority.pubkey()),&[&authority, &group_mint],client.get_latest_blockhash().await?,);client.send_and_confirm_transaction(&group_transaction).await?;let member_mint = Keypair::new();let member_mint_space =ExtensionType::try_calculate_account_len::<Mint>(&[ExtensionType::GroupMemberPointer])?;let member_mint_space_with_data = ExtensionType::try_calculate_account_len::<Mint>(&[ExtensionType::GroupMemberPointer,ExtensionType::TokenGroupMember,])?;let member_mint_rent = client.get_minimum_balance_for_rent_exemption(member_mint_space_with_data).await?;let create_member_mint_account_instruction = create_account(&authority.pubkey(), // Account funding the new mint account.&member_mint.pubkey(), // New member mint account to create.member_mint_rent, // Lamports funding the mint account rent.member_mint_space as u64, // Account size in bytes for the mint plus GroupMemberPointer.&TOKEN_2022_PROGRAM_ID, // Program that owns the mint account.);let initialize_member_pointer_instruction = initialize_group_member_pointer(&TOKEN_2022_PROGRAM_ID,&member_mint.pubkey(), // Mint account that stores the GroupMemberPointer extension.Some(authority.pubkey()), // Authority allowed to update the member pointer later.Some(member_mint.pubkey()), // Account address that stores the member data.)?;let initialize_member_mint_instruction = initialize_mint(&TOKEN_2022_PROGRAM_ID, // Program that owns the mint account.&member_mint.pubkey(), // Mint account to initialize.&authority.pubkey(), // Authority allowed to mint new tokens.Some(&authority.pubkey()), // Authority allowed to freeze token accounts.0, // Number of decimals for the token.)?;let initialize_member_instruction = initialize_member(&TOKEN_2022_PROGRAM_ID, // Program that owns the mint account.&member_mint.pubkey(), // Mint account that stores the member data.&member_mint.pubkey(), // Mint that the member data describes.&authority.pubkey(), // Signer authorizing member initialization for the mint.&group_mint.pubkey(), // Group mint that this member belongs to.&authority.pubkey(), // Signer matching the group's update authority.);let member_transaction = Transaction::new_signed_with_payer(&[create_member_mint_account_instruction,initialize_member_pointer_instruction,initialize_member_mint_instruction,initialize_member_instruction,],Some(&authority.pubkey()),&[&authority, &member_mint],client.get_latest_blockhash().await?,);client.send_and_confirm_transaction(&member_transaction).await?;let group_mint_account = client.get_account(&group_mint.pubkey()).await?;let group_mint_state = StateWithExtensions::<Mint>::unpack(&group_mint_account.data)?;let group_pointer = group_mint_state.get_extension::<GroupPointer>()?;let token_group = group_mint_state.get_extension::<TokenGroup>()?;let member_mint_account = client.get_account(&member_mint.pubkey()).await?;let member_mint_state = StateWithExtensions::<Mint>::unpack(&member_mint_account.data)?;let member_pointer = member_mint_state.get_extension::<GroupMemberPointer>()?;let token_group_member = member_mint_state.get_extension::<TokenGroupMember>()?;println!("\nGroup Mint: {}", group_mint.pubkey());println!("\nGroup Pointer: {:#?}", group_pointer);println!("\nToken Group: {:#?}", token_group);println!("\nMember Mint: {}", member_mint.pubkey());println!("\nGroup Member Pointer: {:#?}", member_pointer);println!("\nToken Group Member: {:#?}", token_group_member);Ok(())}
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