[jdom-interest] protected setDocument() and setParent() use cases

[Elliotte Rusty Harold]

Could somebody please remind me why there are protected setParent() and 
setDocument() methods in most of the classes in org.jdom?

    protected Element setParent(Element parent)
    protected Element setDocument(Document owner)

Why might a subclass need to use these?

-- 
+-----------------------+------------------------+-------------------+
| Elliotte Rusty Harold | elharo at metalab.unc.edu | Writer/Programmer |
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|           The XML Bible, 2nd Edition (IDG Books, 2001)             |
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|   http://www.amazon.com/exec/obidos/ISBN=0764547607/cafeaulaitA/   |
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