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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 parse_xml_node(self, node):
        '''Parse an xml.dom Node object representing a data port into this
        object.

        '''

        self.name = node.getAttributeNS(RTS_NS, 'name')
        self.comment = node.getAttributeNS(RTS_EXT_NS, 'comment')
        if node.hasAttributeNS(RTS_EXT_NS, 'visible'):
            visible = node.getAttributeNS(RTS_EXT_NS, 'visible')
            if visible.lower() == 'true' or visible == '1':
                self.visible = True
            else:
                self.visible = False
        for c in get_direct_child_elements_xml(node, prefix=RTS_EXT_NS,
                                               local_name='Properties'):
            name, value = parse_properties_xml(c)
            self._properties[name] = value
        return self