为特定目录（而不是整个虚拟主机）启用mod_pagespeed

问：

我在modpagespeed文档中读到，可以在.htaccess文件中启用mod_pagespeed，但不建议这样做，另一部分是在整个虚拟主机中启用PageSpeed，如下所示：

ModPagespeed On
ModPagespeedInheritVHostConfig on
ModPagespeedFileCachePath "/var/cache/mod_pagespeed/"
ModPagespeedEnableFilters combine_css,combine_javascript
# Direct Apache to send all HTML output to the mod_pagespeed
# output handler.
AddOutputFilterByType MOD_PAGESPEED_OUTPUT_FILTER text/html

NameVirtualHost *:80
<VirtualHost *:80>
  DocumentRoot /www/example1
  ServerName www.example1.com
  ModPagespeedMapRewriteDomain cdn.example1.com *example.com
</VirtualHost>

我的问题是：是否可以在虚拟主机内的特定目录中启用 pagespeed，而不是在整个虚拟主机站点中启用？

喜欢这个：

<VirtualHost XXX.XXX.XXX.XXX:80>
    SuexecUserGroup "#1001" "#1001"

    ServerName DOMAIN.com
    ServerAlias www.DOMAIN.com
    ServerAlias mail.DOMAIN.com
    ServerAlias webmail.DOMAIN.com
    ServerAlias admin.DOMAIN.com

    DocumentRoot /home/DOMAIN/public_html

    <Directory /home/DOMAIN/public_html/demo-site/demo-2-site>
        AllowOverride Fileinfo Options

        #============= Something like that ==============
        ModPagespeed On
        ModPagespeedInheritVHostConfig on
        ModPagespeedFileCachePath "/var/cache/mod_pagespeed/"
        ModPagespeedEnableFilters combine_css,combine_javascript
        # Direct Apache to send all HTML output to the mod_pagespeed
        # output handler.
        AddOutputFilterByType MOD_PAGESPEED_OUTPUT_FILTER text/html

    </Directory>

</VirtualHost>