Where is XSDDatatypes.XSDIDREFS

[Atakan Kaya]

Hi,

I've noticed that at the implementation of loadXSDSimpleTypes method in 
XSDDatatype class these lines are commented;

//        tm.registerDatatype(XSDIDREFS);
//        tm.registerDatatype(XSDENTITIES);
//        tm.registerDatatype(XSDNMTOKENS);

Why are these lines commented? I need to use XSDDatatypes.XSDIDREFS, but 
how can I use this datatype?

Thanks.