code: def config_path(cls):
      return "configs/datasets/coco/masked.yaml"
  
imports: from mmf.common.registry import registry
  from mmf.datasets.builders.coco.builder import COCOBuilder
  from .masked_dataset import MaskedCOCODataset
label_desc: Use image node_id 3 for calling the MaskedCOCOBuilder obj's underlying member method code with example usage: obj.config_path(cls) and returns: str