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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_path(self, url):
 """Returns the path of a cached resource. Args: url: The url of the resource Returns: The path to the cached resource or None if not in the cache """

        cache_path = self._url_to_path(url)
        if os.path.exists(cache_path):
            return cache_path

        return None