class_docstr: A dataset that provides helpers for batching.
class_docstr_tok: ["A","dataset","that","provides","helpers","for","batching","."]
docstr: Prefetch the data required for this epoch.
docstr_tok: ["Prefetch","the","data","required","for","this","epoch","."]
code: def prefetch(self, indices):
      """Prefetch the data required for this epoch."""
      raise NotImplementedError
  
imports: import logging
  import numpy
  import torch.utils.data
  from fairseq.data import data_utils
label_desc: Use image node_id 10 for calling the FairseqDataset obj's underlying member method code with example usage: obj.prefetch(indices) without return types