code: def config(callback):
      s = wandb_sdk.Config()
      s._set_callback(callback)
      return s
  
file_path: wandb/tests/pytest_tests/unit_tests/test_wandb_config.py
imports: import pytest
  import yaml
  from wandb import wandb_sdk
label_desc: Use image node_id 4 for calling a global function with example usage: config(callback) and returns: s