code: def test_scaffold_assets_with_empty_source(self):
      core.ModelCardToolkit(
          source=tf_sources.Source()
      ).scaffold_assets()
  
file_path: model-card-toolkit/model_card_toolkit/core_tf_test.py
imports: import os
  from unittest import mock
  from absl import flags
  from absl.testing import absltest, parameterized
  from model_card_toolkit import core, dependencies, model_card
label_desc: Use image node_id 7 for calling the TfCoreTest obj's underlying member method code with example usage: obj.test_scaffold_assets_with_empty_source() without return types