code: def __init__(self, max_token_len, pad_token_id):
      self.max_token_len = max_token_len
      self.pad_token_id = pad_token_id
  
file_path: deepspeedexamples/applications/DeepSpeed-VisualChat/utils/data/utils.py
imports: import torch
  from torch.utils.data import Subset
  from torch.nn.utils.rnn import pad_sequence
  import numpy
  import shutil
  from torch.utils.data.dataloader import default_collate
  import utils.data.DST
label_desc: Use image node_id 1 to create a new DataCollatorPadToMaxLen object  with example: obj = DataCollatorPadToMaxLen(max_token_len, pad_token_id)