code: def seed_sampler(self, dataset_type, seed):
      dataset = getattr(self, f"{dataset_type}_dataset")
      dataset.seed_sampler(seed)
  
file_path: mmf/mmf/common/dataset_loader.py
imports: import warnings
  from mmf.common.sample import SampleList
  from mmf.datasets.multi_dataset_loader import MultiDatasetLoader
  from mmf.utils.build import build_multiple_datamodules, build_test_reporter
label_desc: Use image node_id 10 for calling the DatasetLoader obj's underlying member method code with example usage: obj.seed_sampler(dataset_type, seed) without return types