Inconsistent permission checking in PackageAPI

    public PackageAPI(Package plugin, XWikiContext context) throws PackageException {
        super(context);
        if (!hasAdminRights())
            throw new PackageException(XWikiException.ERROR_XWIKI_ACCESS_DENIED, "Admin right is needed to use this plugin");
        setPlugin(plugin);
    }

    public Package getPackage()
    {
        if (hasProgrammingRights())
            return plugin;
        return null;
    }