HttpResponse response = new DefaultHttpResponse(HttpVersion.HTTP_1_1, HttpResponseStatus.OK);
holder.handler.write(holder.ctx, response, holder.ctx.newPromise());
ContextKeySupplier supplier = new HttpContextKeySupplier(response.headers());
ContextsContainer containerToRead = new ContextsContainerImpl(supplier);
Assert.assertEquals("Bi-directional context not written in response.", ctx2, containerToRead.getContext(
ctx2Name));
}