private bool IsSkipableElement(XmlQualifiedName qname)
{
string ns = qname.Namespace;
if (ns != null && !Ref.Equal(ns, _SchemaNames.NsXdr))
return true;
// skip description && extends
if (_SchemaNames.TokenToQName[(int)SchemaNames.Token.XdrDescription].Equals(qname) ||
_SchemaNames.TokenToQName[(int)SchemaNames.Token.XdrExtends].Equals(qname))
return true;
return false;
}