code: def __len__(self):
      length = len(self.texts)
      if self.samples is not None:
          length = min(self.samples, length)
      return length
  
file_path: underthesea/examples/sentiment/data.py
imports: import torch
  from torch.utils.data import Dataset, DataLoader
  import pytorch_lightning
label_desc: Use image node_id 2 for calling the MultiLabelClassificationDataset obj's underlying member method code with example usage: obj.__len__() and returns: length