def __init__(self, dataset, band_dict):
        #Order the band_dict by the file number key
        self.dataset = dataset
        self.band_dict = \
            OrderedDict(sorted(band_dict.items(), key=lambda t: t[0]))
        self.dataset_mdd = dataset.metadata_dict
        self.source_file_list = None
        self.nodata_list = None
        self.vrt_name = None
        self.vrt_band_stack = None
The bandstack allows for the construction of a list, or stack, of
dataset/ETHPy150Open GeoscienceAustralia/agdc/src/landsat_ingester/landsat_bandstack.py/LandsatBandstack.__init__