class_docstr: Dataset for progressive training.
code: def __getitem__(self, index):
      return self.internal_dataset[index]
  
file_path: nebuly/optimization/forward_forward/forward_forward/utils/utils.py
imports: from collections import Generator
  import torch.utils.data
label_desc: Use image node_id 2 for calling the ProgressiveTrainingDataset obj's underlying member method code with example usage: obj.__getitem__(index) and returns: self