code: def main():
      args = parse_args()
      generator = COCOStuffGenerator(
          annotation_path=args.annotation_path, save_path=args.save_path
      )
      generator.generate_label()
  
file_path: PaddleSeg/tools/data/convert_cocostuff.py
imports: import os
  import argparse
  import cv2
  import numpy
  from PIL import Image
  from tqdm import tqdm
label_desc: Use image node_id 2 for calling a global function with example usage: main() without return types