How to get the D-bus path of the settings of a connection ?

[Manuel Yguel <manuel yguel gmail com>]

I have successfully created and deleted adhoc networks from the glib API 
thanks to Dan help. However my test program suffers from one problem: 
the network connection configurations get stored in the network manager 
memory and pollute the user interface. Thus I try to call 
org.freedesktop.NetworkManager.Settings.Connection.Delete for a certain 
NMConnection object without any success so far.
I can see in the D-bus (with qdbusviewer) the configuration for a single 
network connection and I am able to call the Delete method on it 
(because I can see it appears when the setting configuration is recorded).
However I do not know how to get the number (x) in the path that appears at
org/freedesktop/NetworkManager/Settings/x
in order to create a proxy for that "Settings.Connection object" and 
call the Delete method on it later.
First I would like to know if there is a way to get the path of the 
object storing the org.freedesktop.NetworkManager.Settings.Connection 
from the glib API ?

I was first thinking that it may be a NMSettingConnection object. I was 
able to access it but I was only able to get the uuid or the human name 
of the connection.
I also tried the nm_connection_get_path on the NMConnection object but I 
get a NULL string.
I am quite stuck now and any help would be much appreciated.

- all the best,

Manuel

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Manuel Yguel