RH-SSO custom user federation provider fails to load with error: "Caused by: org.jboss.as.server.deployment.DeploymentUnitProcessingException: WFLYEJB0498: Business view method wait declared final in ..."

Issue

• The custom user federation provider does not load anymore, getting the below error in the logs:

  2018-03-27 00:25:05,821 ERROR [org.jboss.msc.service.fail] (MSC service thread 1-3) MSC000001: Failed to start service jboss.deployment.subunit."mytestapp-keycloak-extension-archive.ear"."mytestapp-user-federation-ejb.jar".POST_MODULE: org.jboss.msc.service.StartException in service jboss.deployment.subunit."mytestapp-keycloak-extension-archive.ear"."mytestapp-user-federation-ejb.jar".POST_MODULE: WFLYSRV0153: Failed to process phase POST_MODULE of subdeployment "mytestapp-user-federation-ejb.jar" of deployment "mytestapp-keycloak-extension-archive.ear"
      at org.jboss.as.server.deployment.DeploymentUnitPhaseService.start(DeploymentUnitPhaseService.java:172)
      at org.jboss.msc.service.ServiceControllerImpl$StartTask.startService(ServiceControllerImpl.java:2032)
      at org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1955)
      at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
      at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
      at java.lang.Thread.run(Thread.java:748)
  Caused by: org.jboss.as.server.deployment.DeploymentUnitProcessingException: WFLYEJB0466: Failed to process business interfaces for EJB class class com.mytestorg.sso.plugins.federation.service.MyTestAppUserStorageProvider
      at org.jboss.as.ejb3.deployment.processors.BusinessViewAnnotationProcessor.deploy(BusinessViewAnnotationProcessor.java:96)
      at org.jboss.as.server.deployment.DeploymentUnitPhaseService.start(DeploymentUnitPhaseService.java:165)
      ... 5 more
  Caused by: org.jboss.as.server.deployment.DeploymentUnitProcessingException: WFLYEJB0498: Business view method wait declared final in com.mytestorg.sso.plugins.federation.service.MyTestAppUserStorageProvider
      at org.jboss.as.ejb3.deployment.processors.BusinessViewAnnotationProcessor.verifyViewMethodsNotDeclaredFinal(BusinessViewAnnotationProcessor.java:214)
      at org.jboss.as.ejb3.deployment.processors.BusinessViewAnnotationProcessor.processViewAnnotations(BusinessViewAnnotationProcessor.java:136)
      at org.jboss.as.ejb3.deployment.processors.BusinessViewAnnotationProcessor.deploy(BusinessViewAnnotationProcessor.java:94)
      ... 6 more