code: def __len__(self):
      return len(self.items)
  
file_path: TTS/TTS/encoder/dataset.py
imports: import random
  import torch
  from torch.utils.data import Dataset
  from TTS.encoder.utils.generic_utils import AugmentWAV
label_desc: Use image node_id 4 for calling the EncoderDataset obj's underlying member method code with example usage: obj.__len__() and returns: len