code: def test_english_lemmatize_filter_tokenizer():
      inputs = "Hello, I'm a single sentence!"
      tokenizer = EnglishLemmatizeFilterTokenizer()
      tokens = tokenizer(inputs)
      assert len(tokens) > 0
  
file_path: ludwig/tests/ludwig/utils/test_tokenizers.py
imports: import os
  import pytest
  import torch
  import torchtext
  from ludwig.utils.tokenizers import EnglishLemmatizeFilterTokenizer, NgramTokenizer, StringSplitTokenizer
label_desc: Use image node_id 4 for calling a global function with example usage: test_english_lemmatize_filter_tokenizer() without return types