code: def test_parse_cli_string(self):
      cli_string = "lightly-crop label_dir=/blub"
      self.parse_cli_string(cli_string)
      self.assertEqual(self.cfg["label_dir"], "/blub")
  
imports: import os
  import random
  import re
  import sys
  import tempfile
  import torchvision
  import yaml
  from hydra.experimental import compose, initialize
  import lightly
  from lightly.data import LightlyDataset
  from lightly.utils.bounding_box import BoundingBox
  from lightly.utils.cropping.crop_image_by_bounding_boxes import crop_dataset_by_bounding_boxes_and_save
  from lightly.utils.cropping.read_yolo_label_file import read_yolo_label_file
  from tests.api_workflow.mocked_api_workflow_client import MockedApiWorkflowClient, MockedApiWorkflowSetup
label_desc: Use image node_id 5 for calling the TestCLICrop obj's underlying member method code with example usage: obj.test_parse_cli_string() without return types