How to use the unchained-bitcoin.multisigWitnessScript function in unchained-bitcoin

function ledgerInput(ledgerbtc, input) {
  const addressType = multisigAddressType(input.multisig);
  const tx = ledgerbtc.splitTransaction(input.transactionHex, true)
  if (addressType == MULTISIG_ADDRESS_TYPES.P2SH) {
    return [tx, input.index, scriptToHex(multisigRedeemScript(input.multisig))];
  } else {
    return [tx, input.index, scriptToHex(multisigWitnessScript(input.multisig))];
  }

}

render() {
    const {network, multisig} = this.props;
    const address = multisig.address;
    const redeemScript = multisigRedeemScript(multisig);
    const witnessScript = multisigWitnessScript(multisig);
    return (
      

        Address

        

          

            
              
                <code>{address}</code>
              
              &nbsp;
              {externalLink(blockExplorerAddressURL(address, network), )}