code: def config_path(self):
      return None
  
imports: from mmf.common.registry import Registry
  from mmf.datasets.builders.vizwiz import VizWizBuilder
  from mmf.datasets.builders.vqa2.ocr_dataset import VQA2OCRDataset
label_desc: Use image node_id 2 for calling the TextVQABuilder obj's underlying member method code with example usage: obj.config_path() and returns: None