code: def test_alignment():
      from speechbrain.utils.edit_distance import (
          alignment,
          EDIT_SYMBOLS,
      )
  
      I = EDIT_SYMBOLS["ins"]  # noqa: E741, here I is a good var name
      D = EDIT_SYMBOLS["del"]
      S = EDIT_SYMBOLS["sub"]
      E = EDIT_SYMBOLS["eq"]
      table = [[I, I, I, I], [D, E, I, I], [D, D, E, I], [D, D, D, S]]
      assert alignment(table) == [(E, 0, 0), (E, 1, 1), (S, 2, 2)]
  
label_desc: Use image node_id 3 for calling a global function with example usage: test_alignment() without return types