code: def test_prints_help_and_exists_with_0_exit_code(
      self, capsys: CaptureFixture
  ):
      exit_code = run_dstack_cli([])
      assert exit_code == 0
      assert capsys.readouterr().out.startswith(
          "Usage: dstack [-h] [-v] COMMAND ..."
      )
  
label_desc: Use image node_id 1 for calling the TestDstack obj's underlying member method code with example usage: obj.test_prints_help_and_exists_with_0_exit_code(capsys) without return types