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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(self, url):
 """ Lookup the given url and return an entry if found. Else return None. The returned entry is a dict with metadata about the content and a 'content' key with a file path value :param url: :return: """

        self._load(url)
        self._flush()

        return self.metadata[url]