[libvirt] devAlias correct parsing

[Alexander Burluka]

Hello,

I would be grateful if you help me with next thing:
I've successfully subscribed on VIR_DOMAIN_EVENT_ID_TRAY_CHANGE event in 
my application (QEMU based).
It perfectly works and returns to me an device alias (e.g. 
"drive-scsi0-0-1-0").
Of course I can split this string by delimiter '-'. However, I've found 
private virDomainDefFindDevice function within libvirt and
seems that its make correct parsing. How can I use it in my code?

Thank you!

-- 
Regards,
Alexander Burluka