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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 _url(self):
 """Get the URL for the resource"""

        if self.ID_NAME not in self.route.keys() and "id" in self.data.keys():
            self.route[self.ID_NAME] = self.data["id"]
        return self.config.BASE + self.PATH.format(**self.route)