keras/src/optimizers/schedules/learning_rate_schedule.py/LearningRateSchedule/from_config
class LearningRateSchedule:    def from_config(cls, config):
        """Instantiates a `LearningRateSchedule` from its config.

        Args:
            config: Output of `get_config()`.

        Returns:
            A `LearningRateSchedule` instance.
        """
        return cls(**config)