def __init__(self, fp, tracker_file_name, src_obj_metadata, start_byte,
               end_byte):
    self._orig_fp = fp
    self._tracker_file_name = tracker_file_name
    self._src_obj_metadata = src_obj_metadata
    self._last_tracker_file_byte = None
    self._start_byte = start_byte
    self._end_byte = end_byte
Initializes the SlicedDownloadFileWrapper.
dataset/ETHPy150Open GoogleCloudPlatform/gsutil/gslib/copy_helper.py/SlicedDownloadFileWrapper.__init__