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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 change_format(self, new_format):
 """Change the format label of this content. Note that this does NOT actually alter the format of the content, only the label. """

        self._load_raw_content()
        self._format = new_format
        self.get_filename(renew=True)
        self.get_filepath(renew=True)
        return