This object declares whether the printer has the ability to
staple multi-page documents delivered to the specified output
destination, and whether this ability is currently turned on.
'on' indicates stapling is supported to this output destination,
and that it is turned on.
'off' indicates this printer supports stapling to this output
destination, but that it is turned off. If a job calls for a
staple, none will be given.
'notPresent' indicates that this printer does not support
stapling to this output destination.
The value 'other' shall mean not specified.