Symfony CMF：“cmf_routing.dynamic.persistence.phpcr”下无法识别的选项“use_sonata_admin”

I try to install Symfony CMF with SonataDoctrinePHPCRAdminBundle() and CmfTreeBrowserBundle().

According to docs there's an option in app/config.yml to prevent administrative routes be view-able in admin interface:

# app/config/config.yml
cmf_routing:
    # ...
    dynamic:
        # ...
        persistence:
            phpcr:
                # ...
                use_sonata_admin: false

But I receive an error both in the console and on the site:

"Unrecognized option "use_sonata_admin" under 
"cmf_routing.dynamic.persistence.phpcr"

What could it be?

we are in the process of moving to cmf version 2. the tutorial is currently outdated. sonata admin is now all configured at the new admin bundle, not on cmf_routing anymore. if you want something that works as documented, please use the 1.3 release and the 1.3 documentation. if you are trying out new things, see github.com/symfony-cmf/symfony-cmf-docs/milestone/4 for what documentation can be expect to work or not yet. any help in updating the doc is appreciated of course ;-)