code: def config_path(cls):
      return "configs/datasets/coco2017/masked.yaml"
  
imports: from mmf.common.registry import registry
  from mmf.datasets.builders.coco2017.masked_dataset import MaskedCoco2017Dataset
  from mmf.datasets.mmf_dataset_builder import MMFDatasetBuilder
label_desc: Use image node_id 2 for calling the MaskedFlickr30kBuilder obj's underlying member method code with example usage: obj.config_path(cls) and returns: str