src/transformers/time_series_utils.py/DistributionOutput/value_in_support
class DistributionOutput:    def value_in_support(self) -> float:
        r"""
        A float that will have a valid numeric value when computing the log-loss of the corresponding distribution. By
        default 0.0. This value will be used when padding data series.
        """
        return 0.0