Optionalclient_Specify this to override the parent class's clientId
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 Authorization Code received from the initial /authorize call.
Optionalredirect_This is required only if it was set at the /authorize endpoint. The values must match.
Allow for any custom property to be sent to Auth0