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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_file_urls(self):
 """ Return a list of file urls - will return a single item if settings.USE_BUNDLES is True """

        if self.use_bundle:
            return [self.get_url()]
        return [bundle_file.file_url for bundle_file in self.files]