code: def _record_env_var(self, key):
      if key := os.getenv(key):
          self.env[key] = key
  
file_path: mlflow/examples/auth/auth.py
imports: import os
  import uuid
  import mlflow.server
label_desc: Use image node_id 2 for calling the User obj's underlying member method code with example usage: obj._record_env_var(key) without return types