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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 path(self):
 """URL path for change set APIs. :rtype: str :returns: the path based on project, zone, and change set names. """

        return "/projects/%s/managedZones/%s/changes/%s" % (
            self.zone.project,
            self.zone.name,
            self.name,
        )