How do we determine if an XPath expression results in a node-set? -

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Given that any type other than node-set can not be added to node-set, at runtime How to determine if the result of an XPath expression is set to node? Although I think it should not make any difference, I am using the Sublotron for processing. thank you in advanced.

You can ask for the maximum status if it is more than 1, then the result is a list: / P> 

  Maximum (some / path / condition ())

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