code: def _test_func(arg1, arg2=2, arg3=3, arg4=4):
      return arg1, arg2, arg3, arg4
  
imports: import os
  import tempfile
  import unittest
  import torch
  from omegaconf import OmegaConf
  from detectron2 import model_zoo
  from detectron2.config import configurable, downgrade_config, get_cfg, upgrade_config
  from detectron2.layers import ShapeSpec
  from detectron2.modeling import build_model
label_desc: Use image node_id 1 for calling a global function with example usage: _test_func(arg1, arg2, arg3, arg4) and returns: arg1,  arg2,  arg3,  arg4