Optionalclient_Optionalclient_Specify this to override the parent class's clientSecret
Optionalclient_Specify this to provide your own client assertion JWT rather than
the class creating one for you from the clientAssertionSigningKey.
Optionalclient_If you provide your own client_assertion you should also provide
the client_assertion_type.
The user's verification code.
OptionalaudienceAPI Identifier of the API for which you want to get an Access Token.
OptionalscopeUse openid to get an ID Token, or openid profile email to also include user profile information in the ID Token.
The user's phone number.
Specify this to override the parent class's
clientId