Renames an element, attribute, or processing instruction node.
rename node targetNode as name
•The expression targetNode must point to a single target node, which can be an element, attribute, or processing instruction.
•The expression name must evaluate to a QName or string.
•If a QName is constructed, the mandatory namespace is declared locally.
rename node /book/title as 'header-1'
rename node /book/title as QName("http://www.altova.com/xquf", "header-1")