How to use the @celo/contractkit/lib/identity/claims/keybase.targetURL function in @celo/contractkit

printManualInstruction(
    claim: KeybaseClaim,
    signature: string,
    username: string,
    address: string
  ) {
    const fileName = proofFileName(address)
    writeFileSync(fileName, JSON.stringify({ claim, signature }))
    console.info(
      `\nProving a keybase claim requires you to publish the signed claim on your Keybase file system to prove ownership. We saved it for you under ${fileName}. It should be hosted in your public folder at ${keybaseFilePathToProof}/${fileName}, so that it is available under ${targetURL(
        username,
        address
      )}\n`
    )
  }