code: def __enter__(self) -> "Spinner":
      self.thread = threading.Thread(target=self.spin)
      self.thread.start()
      return self
  
file_path: upgini/src/upgini/spinner.py
imports: import threading
  from typing import Optional, List
  import time
label_desc: Use image node_id 2 for calling the Spinner obj's underlying member method code with example usage: obj.__enter__() and returns: self