METHODS
This class does NOT contain 1 instance of a variable, it's in the Tree::XPathEngine class. This class simply holds the name of the var, for use by the engine when evaluating the querynew
xpath_set_value
xpath_get_value
synonym of get_valueevaluate
as_string
dump the variable call in the XPath expression as a stringas_xml
dump the variable call in the XPath expression as xml