code: def cfg():
      cfg = MagicMock()
      cfg.dataset.parent_id_column = "parent_id"
      cfg.dataset.system_column = "system"
      cfg.dataset.prompt_column = "prompt"
      cfg.dataset.answer_column = "answer"
      cfg.dataset.limit_chained_samples = True
      return cfg
  
file_path: h2o-llmstudio/tests/src/datasets/test_conversation_chain_handler.py
imports: import time
  from unittest import mock
  from unittest.mock import MagicMock
  import pandas
  import pytest
  from llm_studio.app_utils.default_datasets import prepare_default_dataset_causal_language_modeling
  from llm_studio.src.datasets.conversation_chain_handler import ConversationChainHandler
label_desc: Use image node_id 3 for calling a global function with example usage: cfg() and returns: cfg