code: def __len__(self):
      return len(self.captions)
  
imports: import json
  from pathlib import Path
  from typing import Dict
  import torch
  from datasets import load_dataset
  from einops import rearrange
  from ldm.util import instantiate_from_config
  from omegaconf import DictConfig, ListConfig
  from PIL import Image
  from torch.utils.data import Dataset
  from torchvision import transforms
label_desc: Use image node_id 2 for calling the TextOnly obj's underlying member method code with example usage: obj.__len__() and returns: len