class_docstr: Dataset for ModelNet Classification.
code: def __len__(self):
      return len(self.list_of_labels)
  
imports: import os
  from collections import OrderedDict
  import numpy
  from tqdm import tqdm
  import torch
  import copy
  import random
  import pickle
  from PIL import Image
  from lavis.processors.ulip_processors import farthest_point_sample, pc_normalize
  from lavis.datasets.datasets.base_dataset import BaseDataset
label_desc: Use image node_id 4 for calling the ModelNetClassificationDataset obj's underlying member method code with example usage: obj.__len__() and returns: len