Is your feature request related to a problem? Please describe.
The attributes "output-bin" and "sides" can be set on the web "localhost:8000/foo/printing" but cannot be set by the IPP operation "IPP_OP_SET_PRINTER_ATTRIBUTES". The two attributes are skipped in the function _papplPrinterSetAttributes()
Describe the solution you'd like
Is it possible to accept the two attributes in the function _papplPrinterSetAttributes()?