getting result of "at+cpin?" via dbus

[van Schelve <public van-schelve de>]

Hi,

can somebody tell me if there is a way to get the output of "at+cpin?" 
for a connected modem via dbus api?
I already found 
org.freedesktop.ModemManager.Modem.Gsm.Card.EnablePin(....) but nothing 
for getting the current SIM state.

I'm on the way to disable PIN Protection on all of our SIM Cards. 
Because I need to do this more or less fully automated I need a way to 
check the active state and let the user enter the PIN one time in a 
popup.

Thank you!

-- HG