public void v6()
{
XmlSchemaSet sc = new XmlSchemaSet();
XmlSchema Schema1 = sc.Add("xsdauthor1", TestData._XsdNoNs);
XmlSchema Schema2 = sc.Add("xsdauthor2", TestData._XsdNoNs);
Assert.Equal(sc.Count, 2);
Assert.Equal(Schema1 != null, true);
// the second call to add should be ignored with Add returning the first obj
Assert.Equal((Schema2 == Schema1), false);
return;
}