code: def get_existing_video_annotations(self):
      return [f.split(".")[0] for f in os.listdir(self.video_root)]
  
file_path: lavis/lavis/datasets/datasets/music_avqa.py
imports: import torch
  import copy
  import os
  import random
  import json
  import ast
  from PIL import Image
  from lavis.datasets.datasets.base_dataset import BaseDataset
label_desc: Use image node_id 3 for calling the MusicAVQADataset obj's underlying member method code with example usage: obj.get_existing_video_annotations() and returns: unknown