DBus GObject related functions
@format_version:
@method_infos:
@n_method_infos:
@data:
@exported_signals:
@exported_properties:
@object_type:
@info:
@iface_type:
@dbus_prop_name:
@shadow_prop_name:
@void:
@Returns:
@marshaller:
@rettype:
@...:
@marshaller:
@rettype:
@n_types:
@types:
@void: