class_docstr: Cityscapes dataset.
  
  The ``img_suffix`` is fixed to '_leftImg8bit.png' and ``seg_map_suffix`` is
  fixed to '_gtFine_labelTrainIds.png' for Cityscapes dataset.
code: def __init__(self, **kwargs):
      super(CityscapesDataset, self).__init__(
          img_suffix="_leftImg8bit.png",
          seg_map_suffix="_gtFine_labelTrainIds.png",
          **kwargs,
      )
  
file_path: lavis/lavis/common/annotator/uniformer/mmseg/datasets/cityscapes.py
imports: import os.path
  import tempfile
  import annotator.uniformer.mmcv
  import numpy
  from annotator.uniformer.mmcv.utils import print_log
  from PIL import Image
  from .builder import DATASETS
  from .custom import CustomDataset
label_desc: Use image node_id 1 to create a new CityscapesDataset object from inherited base classes: CustomDataset with example: obj = CityscapesDataset()