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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(self, node):
 """ Parse an Object Group from ElementTree xml node :param node: ElementTree xml node :return: self """

        self._set_properties(node)
        self.extend(TiledObject(self.parent, child)
                    for child in node.findall('object'))

        return self