[Feature Request] Extra icon for no content

[moz0817]

Thank you for this very useful plugin :-)

I often use the plugin for struct aggregations. Since these are sometimes empty, it would be very practical if you could see in advance whether there is anything to see ;-)

This could be, for example, an optional RegX that defines missing content. In my example, this would be /Nothing found/. In this case, an x ​​could be used instead of the arrow.