class_docstr: Represents metadata associated with call.
  
  Object must be initialized just before the call, on same thread.
class_docstr_tok: ["Represents","metadata","associated","with","call",".","Object","must","be","initialized","just","before","the","call",",","on","same","thread","."]
code: def __init__(self):
      self.status = Status.UNKNOWN
      self.thread_id = threading.get_ident()
      self.session_id, self.direct_call = _get_session_id(
          self.thread_id
      )
      self.start_time_micros = int(time.time() * 1e6)
  
file_path: datasets/tensorflow_datasets/core/logging/call_metadata.py
imports: import enum
  import threading
  import time
  from typing import Dict, Optional, Tuple
label_desc: Use image node_id 1 to create a new CallMetadata object  with example: obj = CallMetadata()