A dictionary describing the ranges of all tuned hyperparameters.
        The keys are the names of the hyperparameter, and the values are the ranges.

def tuning_ranges(self):
        """A dictionary describing the ranges of all tuned hyperparameters.
        The keys are the names of the hyperparameter, and the values are the ranges.
        """
        out = {}
        for _, ranges in self.description()['HyperParameterTuningJobConfig']['ParameterRanges'].items():
            for param in ranges:
                out[param['Name']] = param
        return out