How to use the stellar-sdk.Operation.setOptions function in stellar-sdk

})
        ),
        ...update.signersToAdd.map(signer =>
          Operation.setOptions({
            signer: { ed25519PublicKey: signer.key, weight: signer.weight }
          })
        )
      ]

      if (
        update.weightThreshold !== props.accountData.thresholds.low_threshold &&
        update.weightThreshold !== props.accountData.thresholds.med_threshold &&
        update.weightThreshold !== props.accountData.thresholds.high_threshold
      ) {
        operations.push(
          Operation.setOptions({
            lowThreshold: update.weightThreshold,
            medThreshold: update.weightThreshold,
            highThreshold: update.weightThreshold
          })
        )
      }

      const tx = await createTransaction(operations, {
        accountData: props.accountData,
        horizon: props.horizon,
        walletAccount: props.account
      })

      const submissionPromise = props.sendTransaction(tx)
      setTxCreationPending(false)

const submitTransaction = async (newDestination: string) => {
    const transaction = await createTransaction(
      [
        Operation.setOptions({
          source: props.account.publicKey,
          inflationDest: newDestination
        })
      ],
      { accountData, horizon: props.horizon, walletAccount: props.account }
    )

    await props.sendTransaction(transaction)
    setTimeout(props.onClose, 1000)
  }

const promise = (async () => {
      const account = await testnetHorizon.loadAccount("GBPBFWVBADSESGADWEGC7SGTHE3535FWK4BS6UW3WMHX26PHGIH5NF4W")
      return buildTransaction(account, [
        Operation.createAccount({
          startingBalance: "1.0",
          destination: "GA2CZKBI2C55WHALSTNPG54FOQCLC6Y4EIATZEIJOXWQPSEGN4CWAXFT"
        }),
        Operation.setOptions({
          inflationDest: "GCCD6AJOYZCUAQLX32ZJF2MKFFAUJ53PVCFQI3RHWKL3V47QYE2BNAUT"
        })
      ])
    })()

...update.signersToAdd.map(signer =>
          Operation.setOptions({
            signer: { ed25519PublicKey: signer.key, weight: signer.weight }
          })
        )