code: def test_processor_class_None(self):
      config = OmegaConf.create({"type": "UndefinedType"})
      with self.assertRaises(ValueError):
          Processor(config)
  
imports: import os
  import tempfile
  import unittest
  import torch
  from mmf.datasets.processors.image_processors import VILTImageProcessor
  from mmf.datasets.processors.processors import CaptionProcessor, EvalAIAnswerProcessor, MultiClassFromFile, MultiHotAnswerFromVocabProcessor, Processor, TransformerBboxProcessor
  from mmf.datasets.processors.video_processors import VideoTransforms
  from mmf.utils.configuration import load_yaml
  from omegaconf import OmegaConf
  from tests.test_utils import compare_tensors, skip_if_no_pytorchvideo
label_desc: Use image node_id 9 for calling the TestDatasetProcessors obj's underlying member method code with example usage: obj.test_processor_class_None() without return types