Deletes a AuthToken by its issuing AuthCode.
The server
will call this method when a request tries to exchange an already exchanged AuthCode.
This method must delete the AuthToken that was previously acquired by exchanging authCode
- this means
that the storage performed by this type must track the issuing AuthCode for an AuthToken if there was one.
Any storage for authCode
can also be removed as well.
Source
FutureOr revokeTokenIssuedFromCode(AuthServer server, AuthCode authCode);