reader.backwardReference.memorizeLink(att);
}
// create anonymous ElementRule. this rule will never be added to
// RefContainer.
return new ElementRule( reader.pool, c, contentModel );
} catch( DatatypeException e ) {
// derivation failed
reader.reportError( e, RELAXCoreReader.ERR_BAD_TYPE, e.getMessage() );
// recover by using harmless expression. anything will do.
return Expression.nullSet;