def _load_from_disk(
        self, path_to_file: Path, metadata: DatasetLoaderMetadata
    ) -> TimeSeries:
        """
        Given a Path to the file and a DataLoaderMetadata object, return a TimeSeries
        One can assume that the file exists and its MD5 checksum has been verified before this function is called

        Parameters
        ----------
        path_to_file: Path
            A Path object where the dataset is located
        metadata: Metadata
            The dataset's metadata

        Returns
        -------
        time_series: TimeSeries
            a TimeSeries object that contains the whole dataset
        """
        pass

        Given a Path to the file and a DataLoaderMetadata object, return a TimeSeries
        One can assume that the file exists and its MD5 checksum has been verified before this function is called

        Parameters
        ----------
        path_to_file: Path
            A Path object where the dataset is located
        metadata: Metadata
            The dataset's metadata

        Returns
        -------
        time_series: TimeSeries
            a TimeSeries object that contains the whole dataset
        
darts/datasets/dataset_loaders.py