https://developer.gnome.org/integration-guide/3.8/thumbnailer.html.en mentions gconf, and

From #gnome-hackers just a few minutes ago:
<ub> Hi every body, i wanna write a thumbnailer for nautilus, according to this guide from gnome 
<ub> https://developer.gnome.org/integration-guide/stable/thumbnailer.html.en 
<ub> i have to assign my script and nautilus with schema. so i wrote a schema here but in doesnt work
<ub> http://pastebin.centos.org/3433/
<andre> ub: uhm, that file is ancient and outdated, e.g. gconf is not used anymore, but dconf
<ub> ooh,really ? so how can i do this?