code: def get_env_vars(env_vars: Dict[str, str]):
      if not env_vars:
          return ""
  
      exports = [f"export {k}={v}" for k, v in env_vars.items()]
      return "\n".join(exports)
  
label_desc: Use image node_id 2 for calling a global function with example usage: get_env_vars(env_vars) and returns: str, str