Description
The SearchManager class still uses an outdated namespace uri for the 'fn' prefix: http://www.w3.org/2004/10/xpath-functions
The prefix should be re-mapped to the now offical namespace: http://www.w3.org/2005/xpath-functions
See: http://www.w3.org/TR/xquery-operators/#namespace-prefixes
To keep a minimum of backward compatibility, the existing namespace uri should still exist in the namespace registry, but refer to another prefix. E.g. fn_old.