code: def __init__(self):
      super().__init__()
      self.dataset_name = "VQA2_OCR"
      self.set_dataset_class(VQA2OCRDataset)
  
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 1 to create a new TextVQABuilder object from inherited base classes: VizWizBuilder with example: obj = TextVQABuilder()