code: def __init__(self, *args, **kwargs):
      super().__init__(*args, **kwargs)
      self.dataset_name = "masked_q_vqa2"
  
imports: import random
  from mmf.datasets.builders.vqa2.dataset import VQA2Dataset
label_desc: Use image node_id 1 to create a new MaskedQVQA2Dataset object from inherited base classes: VQA2Dataset with example: obj = MaskedQVQA2Dataset()