THIS IS A TEST INSTANCE. ALL YOUR CHANGES WILL BE LOST!!!!
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The xpath family of UDFs are wrappers around the Java XPath library javax.xml.xpath
provided by the JDK. The library is based on the XPath 1.0 specification. Please refer to http://java.sun.com/javase/6/docs/api/javax/xml/xpath/package-summary.html for detailed information on the Java XPath library.
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