Embedded Lua scripts in RPM

[little.owl]

Hi all,

I try to familiarise with [new] RPM features (4.8+). One feature is the 
embedded Lua interpreter (http://rpm.org/wiki/PackagerDocs/RpmLua), 
however, I am struggling to find real [more advanced] examples, how it 
is being used in SPECs. Please, can anybody give me some links?

Cheers,
Vaclav.

PS: If the subject is "Embedded Lua scripts in RPM - where can I find 
real examples?", the message is returned as spam. :-(