private ContainerRequest mockContainerRequest() {
   ContainerRequest containerRequest = mock(ContainerRequest.class);
   when(containerRequest.getBaseUri()).thenReturn(baseUri);
   when(containerRequest.getRequestUri()).thenReturn(requestUri);
   when(containerRequest.getMethod()).thenReturn(httpMethod);
   when(containerRequest.getRequestHeaders()).thenReturn(requestHeaders);
   return containerRequest;
 }
 private void setHeaders(MultivaluedMap<String, Object> headers) {
   this.headers = headers;
   Object location = headers.getFirst(HttpHeaders.LOCATION);
   if (location != null) {
     if (location instanceof URI) {
       final URI locationUri = (URI) location;
       if (!locationUri.isAbsolute()) {
         final URI base =
             (statusType.getStatusCode() == Status.CREATED.getStatusCode())
                 ? request.getAbsolutePath()
                 : request.getBaseUri();
         location =
             UriBuilder.fromUri(base)
                 .path(locationUri.getRawPath())
                 .replaceQuery(locationUri.getRawQuery())
                 .fragment(locationUri.getRawFragment())
                 .build();
       }
       headers.putSingle(HttpHeaders.LOCATION, location);
     }
   }
 }