Feeder device type - Xerox Substraite Feeding Module
An 'xcmHrDeviceFeederSFM' device is an input device.
An 'xcmHrDeviceFeederSFM' device with
'xcmHrDevInfoRealization' of 'physical' is a 'real' output
device (eg, a 'high-capacity feeder' on a high-end printer).
An 'xcmHrDeviceFeeder' device with 'xcmHrDevInfoRealization'
of 'logical' is a 'virtual' output device (eg, a 'personality'
of a 'high-capacity feeder' on a high-end printer).