code: def collater(self, samples):
      return data_utils.collate_tokens(
          samples,
          self.pad_idx,
          left_pad=self.left_pad,
          pad_to_length=self.pad_length,
      )
  
file_path: fairseq/fairseq/data/pad_dataset.py
imports: from fairseq.data import data_utils
  from .None import BaseWrapperDataset
label_desc: Use image node_id 2 for calling the PadDataset obj's underlying member method code with example usage: obj.collater(samples) and returns: data_utils