code: def add(app_cfg: DictConfig, key1: str, key2: str) -> Any:
      num1 = app_cfg[key1]
      num2 = app_cfg[key2]
      ret = num1 + num2
      print(f"Hello {app_cfg.user}, {num1} + {num2} = {ret}")
      return ret
  
imports: from typing import Any
  from omegaconf import DictConfig
  import hydra
label_desc: Use image node_id 1 for calling a global function with example usage: add(app_cfg, key1, key2) and returns: ret