code: def get_image_list(self, img_dir):
      imgs = glob.glob(os.path.join(img_dir, "*.png"))
      if len(imgs) == 0:
          raise ValueError(f"not any images founded in {img_dir}")
      return imgs
  
imports: import numpy
  import paddle
  import os
  import cv2
  import glob
label_desc: Use image node_id 2 for calling the SimpleDataset obj's underlying member method code with example usage: obj.get_image_list(img_dir) and returns: imgs