code: def __enter__(self):
      self.monkeypatch.setenvs(
          {
              MLFLOW_TRACKING_USERNAME.name: self.username,
              MLFLOW_TRACKING_PASSWORD.name: self.password,
          }
      )
  
file_path: mlflow/tests/server/auth/auth_test_utils.py
imports: from mlflow.environment_variables import MLFLOW_TRACKING_PASSWORD, MLFLOW_TRACKING_USERNAME
  from mlflow.server.auth import auth_config
  from tests.helper_functions import random_str
  from tests.tracking.integration_test_utils import _send_rest_tracking_post_request
label_desc: Use image node_id 2 for calling the User obj's underlying member method code with example usage: obj.__enter__() without return types