code: def test_mnist_clf(self) -> None:
      folder = os.path.join(examples_folder, "classification")
      self.assertEqual(
          os.system(
              f"python {os.path.join(folder, 'mnist_clf.py')} --ci 1"
          ),
          0,
      )
  
imports: import os
  import unittest
label_desc: Use image node_id 1 for calling the TestExample obj's underlying member method code with example usage: obj.test_mnist_clf() without return types