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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 prepare_model_data(self, packages, linked, pip=None, private_packages=None):
 """Prepare downloaded package info along with pip pacakges info."""

        logger.debug('')
        return self._prepare_model_data(packages, linked, pip=pip,
                                        private_packages=private_packages)