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Documentation Index

Fetch the complete documentation index at: https://docs.polygon.technology/llms.txt

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The withdrawStartMany method can be used to initiate the withdraw process which will burn the multiple token on polygon chain. 
const erc721Token = posClient.erc721(<child token address>);

const result = await erc721Token.withdrawStartMany([<token id1>, <token id2>]);

const txHash = await result.getTransactionHash();

const txReceipt = await result.getReceipt();