code: def __init__(self):
      metadata_file = os.path.join(
          os.path.dirname(__file__), "onnx-metadata.json"
      )
      with open(metadata_file, "r", encoding="utf-8") as file:
          for item in json.load(file):
              name = item["name"]
              self.metadata[name] = item
  
imports: import collections
  import enum
  import json
  import os
label_desc: Use image node_id 1 to create a new _Metadata object  with example: obj = _Metadata()