Parameters:

• params Object
  • [username] String optional

    The username to be used for authentication. This parameter is optional here as you may also provide the same parameter when you call the authenticate function.

  • [apiKey] String optional

    The API key to be used for authentication. This parameter is optional here as you may also provide the same parameter when you call the

  • [region] String optional

    The region to be used for this client. This parameter is optional; you may also provide the same parameter when you call the authenticate function. If neither of these two functions get this parameter, then the account's default region will be used.