code: def __init__(self):
      super().__init__()
      self.dataset_name = "masked_gqa"
      self.dataset_class = MaskedGQADataset
  
imports: from mmf.common.registry import registry
  from mmf.datasets.builders.gqa.builder import GQABuilder
  from mmf.datasets.builders.gqa.masked_dataset import MaskedGQADataset
label_desc: Use image node_id 1 to create a new MaskedGQABuilder object from inherited base classes: GQABuilder with example: obj = MaskedGQABuilder()