class_docstr: Class for loading language id data and providing batches
  
  Attempt to recreate data pre-processing from: https://github.com/AU-DIS/LSTM_langid
  
  Uses methods from: https://github.com/AU-DIS/LSTM_langid/blob/main/src/language_datasets.py
  
  Data format is same as LSTM_langid
code: def next(self):
      return next(self.batches_iter)
  
file_path: stanza/stanza/models/langid/data.py
imports: import json
  import random
  import torch
label_desc: Use image node_id 5 for calling the DataLoader obj's underlying member method code with example usage: obj.next() and returns: next