internal LegacyMicrosoftAccount(bool?enabled, ClientRegistration registration, LoginScopes login, AllowedAudiencesValidation validation)
 {
     Enabled      = enabled;
     Registration = registration;
     Login        = login;
     Validation   = validation;
 }
 internal Google(bool?enabled, ClientRegistration registration, LoginScopes login, AllowedAudiencesValidation validation)
 {
     Enabled      = enabled;
     Registration = registration;
     Login        = login;
     Validation   = validation;
 }