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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 get_clippath(self, node):
 """ Return the clipping Path object referenced by the node 'clip-path' attribute, if any. """

        def get_path_from_node(node):
            for child in node.getchildren():
                if node_name(child) == 'path':
                    group = self.shape_converter.convertShape('path', NodeTracker(child))
                    return group.contents[-1]
                else:
                    return get_path_from_node(child)

        clip_path = node.getAttribute('clip-path')
        if clip_path:
            m = re.match(r'url\(#([^\)]*)\)', clip_path)
            if m:
                ref = m.groups()[0]
                if ref in self.definitions:
                    path = get_path_from_node(self.definitions[ref])
                    if path:
                        path = ClippingPath(copy_from=path)
                        return path