XMLStreamHelper should generate xsi:type if the root element of the XMLDocument is not an existing global element

Trying to convert a Customer DataObject into XMLStreamReader, the root element is dummy which is not a global element. We would like to see xsi:type as follows.

<dummy xmlns="http://dummy" xsi:type="c:Customer" xmlns:xsi="..." xmlns:c="http://customer">
....
</dummy>

I have a fix. If you agree, I can commit.

Thanks,
Raymond