code: def __exit__(self, *_exc):
      self._restore_env_var(User.MLFLOW_TRACKING_USERNAME)
      self._restore_env_var(User.MLFLOW_TRACKING_PASSWORD)
      self.env.clear()
  
file_path: mlflow/examples/auth/auth.py
imports: import os
  import uuid
  import mlflow.server
label_desc: Use image node_id 5 for calling the User obj's underlying member method code with example usage: obj.__exit__() without return types