With xwiki.showviewaction=0 and url.standard.hideViewAction=true, requests for nested document gets mapped to UnknownAction.

        // TODO: This is a big hack and needs to be fixed ASAP. ATM the WebJAR feature is bound as an Entity Resource
        // Handler which is not correct. It should be using its own Resource Type (since it's not a Resource Entity).
        // For this we need to introduce a new Servlet/Filter to be able to hook in new Resource Types. When this
        // is done remove this. See also http://jira.xwiki.org/browse/XWIKI-11056
        // Note: The action is "unknown" for webjars since it's not defined in struts-config.xml.
        // Note: Be careful to not add other unknown actions since permissions wouldn't be checked for those either...
        if (!context.getAction().equals("unknown")) {