Handle any notification messages sent by the ID Verification service. For example:

idvService.processNotification(notificationData,
    (verificationResult) -> {
      //Handle ValidationResult here
      VerifyStatus status = verificationResult.getStatus().getStatus();
      //For a successful validation,
      Collection<Claim> claims = verificationResult.getClaims();
      //For a failed validation,
      Collection<ProviderMessages> errors = 
            verificationResult.getStatus().getProviderMessagesList();
    },
    if (!idvService.getValue().processNotification(NOTIFICATION_DATA)) {
      // Notification cannot be handled by the SDK
      // Handle your app notifications here           
    }
    (error) -> {
      //Handle error here
    });

See processNotification in IdvService for more information.