code: def test_visualize_help(run: Callable[..., RunResult]):
      output = run("visualize", "--help")
  
      help_text = f"""usage: {RASA_EXE} visualize [-h] [-v] [-vv] [--quiet]
                        [--logging-config-file LOGGING_CONFIG_FILE] [-d DOMAIN]
                        [-s STORIES] [--out OUT] [--max-history MAX_HISTORY]
                        [-u NLU]"""
  
      lines = help_text.split("\n")
      # expected help text lines should appear somewhere in the output
      printed_help = {line.strip() for line in output.outlines}
      for line in lines:
          assert line.strip() in printed_help
  
label_desc: Use image node_id 1 for calling a global function with example usage: test_visualize_help(run) without return types