class_docstr: Dataset for Annotations used in MMF
  
  TODO: Update on docs sprint
code: def get_version(self):
      return self.metadata.get("version", None)
  
file_path: mmf/mmf/datasets/databases/annotation_database.py
imports: import json
  import numpy
  import torch
  from mmf.utils.file_io import PathManager
  from mmf.utils.general import get_absolute_path
label_desc: Use image node_id 9 for calling the AnnotationDatabase obj's underlying member method code with example usage: obj.get_version() and returns: self