code: def collater(self, samples):
      data = super().collater(samples)
      data["text_output"] = data["answer"]
      return data
  
file_path: lavis/lavis/datasets/datasets/vqa_datasets.py
imports: import torch
  from lavis.datasets.datasets.base_dataset import BaseDataset
label_desc: Use image node_id 1 for calling the VQAInstructDataset obj's underlying member method code with example usage: obj.collater(samples) and returns: data