code: def main() -> None:
      lmdb_converter = LMDBConversion()
      lmdb_converter.execute()
  
file_path: mmf/tools/scripts/features/lmdb_conversion.py
imports: import argparse
  import glob
  import os
  import pickle
  import lmdb
  import numpy
  import tqdm
  from mmf.utils.file_io import PathManager
label_desc: Use image node_id 1 for calling a global function with example usage: main() without return types