How to register client at xfce session

[Wojciech S. Czarnecki]

I am trying to revive terminator terminal and get it to work 
with xfce session manager. To no avail so far. There is no
{ss} RegisterClient method exposed at org.xfce.Session.Manager
likely because most distros follow your (xfce) advice and compiles
session manager with --disable-legacy-sm flag. 

How can I register with xfce session manager if it comes without
RegisterClient method? 

Where can I find docs/Howtos about "not legacy" ways of interfacing
with xfce session manager. All I really need is 'save-state'.

Any help, even in a RTFM form **with a pointer to the FM**,
will be much appreciated.

TC,

-- 
Wojciech S. Czarnecki
 << ^oo^ >> OHIR-RIPE