class_docstr: A dataset that provides helpers for batching.
class_docstr_tok: ["A","dataset","that","provides","helpers","for","batching","."]
code: def attr(self, attr: str, index: int):
      return getattr(self, attr, None)
  
imports: import logging
  import numpy
  import torch.utils.data
  from fairseq.data import data_utils
label_desc: Use image node_id 9 for calling the FairseqDataset obj's underlying member method code with example usage: obj.attr(attr, index) and returns: getattr