code: def __len__(self):
      return len(self.data)
  
imports: import os
  import unittest
  import uuid
  import faiss
  import torch
  import torchvision
  from torchvision import datasets, transforms
  from pytorch_metric_learning.utils.inference import InferenceModel
  from ..None import TEST_DEVICE
label_desc: Use image node_id 2 for calling the TextDataset obj's underlying member method code with example usage: obj.__len__() and returns: len