To be returned when we try to send an AT command to a modem, but there is no
usable AT port available, as the primary port is connected (hence the name)
and there is no secondary port.
Elements in a DBus interface name cannot start with a digit, so
"org.freedesktop.ModemManager1.Modem.3gpp" is an invalid interface name.
Renamed here all relevant interfaces so that they have an additional "Modem"
prefix in the element, so we get now:
"org.freedesktop.ModemManager1.Modem.Modem3gpp"
"org.freedesktop.ModemManager1.Modem.Modem3gpp.Ussd"
"org.freedesktop.ModemManager1.Modem.ModemCdma"
Objects generated with gdbus-codegen maintain the previous names.
The code to handle the Enums and Flags type information is automatically built
with `glib-mkenums' and the new templates kept under `build-aux'.
Note: We currently skip the type information of `MMModemBand'. GFlagsValue
can hold only 32-bit types, and we're working with a 64-bit flag here.
See: https://bugzilla.gnome.org/show_bug.cgi?id=663054
This library will not (probably) be installable, but will share the GDBus
and new Enum/Flag/Error type support between the core daemon and the new
libmm-glib library.