BlobStore.blobExists throws exception when blob does not exist

org.jclouds.http.HttpResponseException: request: HEAD http://swift.ceph.myhost/swift/v1/gkikolashvili-2016-01-12/1cfeb96cccc6569703dcdba64354ee5a-fb66d02f-f2a4-4a4b-90a9-1106b66a014aa HTTP/1.1 failed with response: HTTP/1.1 404 Not Found
	at org.jclouds.openstack.swift.handlers.ParseSwiftErrorFromHttpResponse.handleError(ParseSwiftErrorFromHttpResponse.java:55)
	at org.jclouds.http.handlers.DelegatingErrorHandler.handleError(DelegatingErrorHandler.java:67)
	at org.jclouds.http.internal.BaseHttpCommandExecutorService.shouldContinue(BaseHttpCommandExecutorService.java:180)
	at org.jclouds.http.internal.BaseHttpCommandExecutorService.invoke(BaseHttpCommandExecutorService.java:150)
	at org.jclouds.rest.internal.InvokeSyncToAsyncHttpMethod.invoke(InvokeSyncToAsyncHttpMethod.java:129)
	at org.jclouds.rest.internal.InvokeSyncToAsyncHttpMethod.apply(InvokeSyncToAsyncHttpMethod.java:95)
	at org.jclouds.rest.internal.InvokeSyncToAsyncHttpMethod.apply(InvokeSyncToAsyncHttpMethod.java:56)
	at org.jclouds.rest.internal.DelegatesToInvocationFunction.handle(DelegatesToInvocationFunction.java:156)
	at org.jclouds.rest.internal.DelegatesToInvocationFunction.invoke(DelegatesToInvocationFunction.java:123)
	at com.sun.proxy.$Proxy132.objectExists(Unknown Source)
	at org.jclouds.openstack.swift.blobstore.SwiftBlobStore.blobExists(SwiftBlobStore.java:163)
	at nbs.core.SwiftClient.blobExits(SwiftClient.java:97)
	at nbs.core.SwiftClient.get(SwiftClient.java:58)
	at nbs.service.v3.BlobService.download(BlobService.java:50)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:606)
	at org.glassfish.jersey.server.model.internal.ResourceMethodInvocationHandlerFactory$1.invoke(ResourceMethodInvocationHandlerFactory.java:81)
	at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher$1.run(AbstractJavaResourceMethodDispatcher.java:144)
	at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher.invoke(AbstractJavaResourceMethodDispatcher.java:161)
	at org.glassfish.jersey.server.model.internal.JavaResourceMethodDispatcherProvider$ResponseOutInvoker.doDispatch(JavaResourceMethodDispatcherProvider.java:160)
	at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher.dispatch(AbstractJavaResourceMethodDispatcher.java:99)
	at org.glassfish.jersey.server.model.ResourceMethodInvoker.invoke(ResourceMethodInvoker.java:389)
	at org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:347)
	at org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:102)
	at org.glassfish.jersey.server.ServerRuntime$2.run(ServerRuntime.java:326)
	at org.glassfish.jersey.internal.Errors$1.call(Errors.java:271)
	at org.glassfish.jersey.internal.Errors$1.call(Errors.java:267)
	at org.glassfish.jersey.internal.Errors.process(Errors.java:315)
	at org.glassfish.jersey.internal.Errors.process(Errors.java:297)
	at org.glassfish.jersey.internal.Errors.process(Errors.java:267)
	at org.glassfish.jersey.process.internal.RequestScope.runInScope(RequestScope.java:317)
	at org.glassfish.jersey.server.ServerRuntime.process(ServerRuntime.java:305)
	at org.glassfish.jersey.server.ApplicationHandler.handle(ApplicationHandler.java:1154)
	at org.glassfish.jersey.servlet.WebComponent.serviceImpl(WebComponent.java:471)
	at org.glassfish.jersey.servlet.WebComponent.service(WebComponent.java:425)
	at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:383)
	at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:336)
	at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:223)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:501)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:170)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)
	at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:950)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1041)
	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:607)
	at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:313)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
	at java.lang.Thread.run(Thread.java:745)

HEAD /swift/v1/2016-01-12/1cfeb96cccc6569703dcdba64354ee5a-fb66d02f-f2a4-4a4b-90a9-1106b66a014aa HTTP/1.1
Accept: */*
X-Auth-Token: AUTH_rgwtk13000000676b696b6f6c61736876696c693a737769667487e0fb02ef37dc8cab09965672c6bb337e5dac95895f55a146d11c6c17faeaa0b302c3e9
User-Agent: jclouds/1.9.1 java/1.7.0_91
Cache-Control: no-cache
Pragma: no-cache
Host: swift.ceph.myhost
Connection: keep-alive

HTTP/1.1 404 Not Found
X-Trans-Id: tx000000000000000e5d2d5-005694b940-2a7d634-main
Content-Length: 9
Accept-Ranges: bytes
Content-type: text/plain; charset=utf-8
Date: Tue, 12 Jan 2016 08:28:48 GMT
Connection: Keep-Alive

<dependency>
    <groupId>org.apache.jclouds</groupId>
    <artifactId>jclouds-allblobstore</artifactId>
    <version>1.9.1</version>
</dependency>

// workaround to blobExits method throwing exception when blob does not exit
    private boolean blobExits(BlobStore blobStore, String container, String name) {
        try {
            blobStore.blobExists(container, name);
        } catch (Exception e) {
            e.printStackTrace();
            return false;
        }
        return true;
    }