code: def _default_row_mapper(
      example: List[str],
  ) -> Dict[str, Union[float, int, str]]:
      return {
          DEFAULT_COLUMN_NAMES[idx]: COLUMN_TYPE_CASTERS[idx](val)
          for idx, val in enumerate(example)
      }
  
file_path: torchrec/torchrec/datasets/movielens.py
imports: import os
  from typing import Any, Callable, Dict, List, Optional, Union
  from torch.utils.data import IterDataPipe
  from torchrec.datasets.utils import LoadFiles, ReadLinesFromCSV, safe_cast
label_desc: Use image node_id 1 for calling a global function with example usage: _default_row_mapper(example) and returns: unknown