NMDeviceModem
@NM_DEVICE_MODEM_ERROR_UNKNOWN:
@NM_DEVICE_MODEM_ERROR_NOT_MODEM_CONNECTION:
@NM_DEVICE_MODEM_ERROR_INVALID_MODEM_CONNECTION:
@NM_DEVICE_MODEM_ERROR_MISSING_DEVICE_CAPS:
@void:
@Returns:
@parent:
@_reserved1:
@_reserved2:
@_reserved3:
@_reserved4:
@_reserved5:
@_reserved6:
@self:
@Returns:
@self:
@Returns: