code: def __init__(self, key, obj_dict):
      self.headers = {}
      self.headers["Last-Modified"] = int(time.time())
      self.headers["Content-Length"] = len(obj_dict[key].encode("utf8"))
  
imports: import time
  from io import BytesIO
  import pytest
  from ....None import dataframe
  from ....tests.core import mock
  from ..None import oss
  from .._oss_lib import glob
  from .._oss_lib.common import OSSFileEntry
  from ..oss import build_oss_path
label_desc: Use image node_id 1 to create a new ObjectMeta object  with example: obj = ObjectMeta(key, obj_dict)