Creates an XML reader object from a file.
createFileReader( filename STRING ) RETURNING result om.XmlReader
Use the om.XmlReader.createFileReader() method to create a new om.XmlReader object, to process the XML data from a file input stream.
To hold the reference to an XmlReader object, define a variable with the type om.XmlReader type.
DEFINE r om.XmlReader LET r = om.XmlReader.createFileReader("cars.xml")