code: def __init__(self, dataset_name="vqa2_train_val"):
      super().__init__(dataset_name)
  
file_path: mmf/mmf/datasets/builders/vqa2/builder.py
imports: from mmf.common.registry import registry
  from mmf.datasets.builders.vqa2.dataset import VQA2Dataset
  from mmf.datasets.mmf_dataset_builder import MMFDatasetBuilder
label_desc: Use image node_id 1 to create a new VQA2TrainValBuilder object from inherited base classes: VQA2Builder with example: obj = VQA2TrainValBuilder(dataset_name)