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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 save_xml(self, doc, element):
        '''Save this location into an xml.dom.Element object.'''
        element.setAttributeNS(RTS_EXT_NS, RTS_EXT_NS_S + 'x', str(self.x))
        element.setAttributeNS(RTS_EXT_NS, RTS_EXT_NS_S + 'y', str(self.y))
        element.setAttributeNS(RTS_EXT_NS, RTS_EXT_NS_S + 'height',
                               str(self.height))
        element.setAttributeNS(RTS_EXT_NS, RTS_EXT_NS_S + 'width',
                               str(self.width))
        element.setAttributeNS(RTS_EXT_NS, RTS_EXT_NS_S + 'direction',
                               dir.to_string(self.direction).lower())