code: def __enter__(self):
      self._record_env_var(User.MLFLOW_TRACKING_USERNAME)
      self._record_env_var(User.MLFLOW_TRACKING_PASSWORD)
      os.environ[User.MLFLOW_TRACKING_USERNAME] = self.username
      os.environ[User.MLFLOW_TRACKING_PASSWORD] = self.password
      return self
  
file_path: mlflow/examples/auth/auth.py
imports: import os
  import uuid
  import mlflow.server
label_desc: Use image node_id 4 for calling the User obj's underlying member method code with example usage: obj.__enter__() and returns: self