.getGroup(IppAttributeGroup.TAG_OPERATION_ATTRIBUTES);
va.add("printer-uri-supported".getBytes());
agroup.add(new IppAttribute(IppAttribute.TAG_KEYWORD,
"requested-attributes", va));
response = c.request(request.getBytes());
IppAttributeGroup g = response
.getGroup(IppAttributeGroup.TAG_GET_PRINTER_ATTRIBUTES);
if (g != null) {
int ai = g.findAttribute("printer-uri-supported");