Basic REST service with void return type or no response entity fails

It looks like some bean validation is being attempted on the response object, which is failing because the response entity is null.

Simple services to reproduce:

@GET
@Path("test")
public void foo() {

}

@GET
@Path("test2")
public Response foo2()

Exception when invoking:

java.lang.IllegalArgumentException: bean
  at org.apache.bval.util.Validate.notNull(Validate.java:38)
  at org.apache.bval.jsr.job.ValidateBean.<init>(ValidateBean.java:35)
  at org.apache.bval.jsr.job.ValidationJobFactory.validateBean(ValidationJobFactory.java:52)
  at org.apache.bval.jsr.ValidatorImpl.validate(ValidatorImpl.java:53)
  at org.apache.cxf.validation.BeanValidationProvider.doValidateBean(BeanValidationProvider.java:149)
  at org.apache.cxf.validation.BeanValidationProvider.validateReturnValue(BeanValidationProvider.java:135)
  at org.apache.cxf.validation.BeanValidationOutInterceptor.handleValidation(BeanValidationOutInterceptor.java:43)
  at org.apache.cxf.validation.AbstractValidationInterceptor.handleMessage(AbstractValidationInterceptor.java:82)
  at org.apache.cxf.phase.PhaseInterceptorChain.doIntercept(PhaseInterceptorChain.java:308)
  at org.apache.cxf.interceptor.OutgoingChainInterceptor.handleMessage(OutgoingChainInterceptor.java:90)
  at org.apache.cxf.phase.PhaseInterceptorChain.doIntercept(PhaseInterceptorChain.java:308)
  at org.apache.cxf.transport.ChainInitiationObserver.onMessage(ChainInitiationObserver.java:121)
  at org.apache.cxf.transport.http.AbstractHTTPDestination.invoke(AbstractHTTPDestination.java:267)
  at org.apache.openejb.server.cxf.rs.CxfRsHttpListener.doInvoke(CxfRsHttpListener.java:258)
  at org.apache.tomee.webservices.CXFJAXRSFilter.doFilter(CXFJAXRSFilter.java:99)
  at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
  at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
  at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
  at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
  at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
  at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202)
  at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
  at org.apache.tomee.catalina.OpenEJBValve.invoke(OpenEJBValve.java:45)
  at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:541)
  at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139)
  at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
  at org.apache.tomee.catalina.OpenEJBSecurityListener$RequestCapturer.invoke(OpenEJBSecurityListener.java:97)
  at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:678)
  at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74)
  at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)
  at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:367)
  at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
  at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:860)
  at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1598)
  at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
  at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
  at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
  at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
  at java.lang.Thread.run(Thread.java:748)