anchor.diff:  
       // register fake services that would have external dependencies
       registerAuthProvider(FakeAuthProvider());
  +    registerScopeExitCallback(authProvider.close);
       registerDomainVerifier(FakeDomainVerifier());
       registerEmailSender(FakeEmailSender());
       registerUploadSigner(
  
positive.code:           activeConfiguration.adminAudience!,
          ],
        ));
        registerDomainVerifier(DomainVerifier());
        registerEmailSender(
          activeConfiguration.gmailRelayServiceAccount != null &&
  
negative.code:       // retrying auth client for storage service
        final authClient = await auth
            .clientViaApplicationDefaultCredentials(scopes: [...Storage.SCOPES]);
        registerScopeExitCallback(() async => authClient.close());
        final retryingAuthClient = httpRetryClient(innerClient: authClient);
        registerScopeExitCallback(() async => retryingAuthClient.close());
  
  