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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def toxml(self, encoding="UTF-8"):
 """ Return the manifest as XML """

        domtree = self.todom()
        # WARNING: The XML declaration has to follow the order 
        # version-encoding-standalone (standalone being optional), otherwise 
        # if it is embedded in an exe the exe will fail to launch! 
        # ('application configuration incorrect')
        xmlstr = domtree.toxml(encoding).replace(
            '<?xml version="1.0" encoding="%s"?>' % encoding, 
            '<?xml version="1.0" encoding="%s" standalone="yes"?>' % encoding)
        domtree.unlink()
        return xmlstr