docstr: Test that context alignment with tokenization doesn't error out 
docstr_tok: ["Test","that","context","alignment","with","tokenization","does","n't","error","out"]
code: def test_featurize_doc_with_empty_pages(self):
      """Test that context alignment with tokenization doesn't error out"""
      with open("tests/data/doc_with_empty_pages.json") as f:
          doc = json.load(f)
      model = DocumentLabeler(
          n_epochs=20, base_model=DocRep, crf_sequence_labeling=True
      )
      model.featurize([doc])
  
file_path: finetune/tests/test_document.py
imports: import os
  import json
  import unittest
  import pandas
  from sklearn.model_selection import train_test_split
  from finetune import DocumentLabeler
  from finetune.base_models import DocRep
  from finetune.util.metrics import sequence_labeling_micro_token_f1
label_desc: Use image node_id 5 for calling the TestDocumentLabeler obj's underlying member method code with example usage: obj.test_featurize_doc_with_empty_pages() without return types