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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_cloud_foundry_config(self):
 """ Reads the local cf CLI cache stored in the users home directory. """

        config = os.path.expanduser(self.config_file)
        if not os.path.exists(config):
            raise CloudFoundryLoginError('You must run `cf login` to authenticate')

        with open(config, "r") as data:
            return json.load(data)