code: def test_view_n_grams(self):
      _ = view_n_grams(self.references)
  
file_path: vizseq/tests/ipynb/test_core.py
imports: from .None import VizSeqIpynbTestCase
  from vizseq.ipynb.core import view_stats, view_examples, view_n_grams, view_scores
label_desc: Use image node_id 4 for calling the VizSeqIpynbCoreTestCase obj's underlying member method code with example usage: obj.test_view_n_grams() without return types