code: def test_embed(self):
      lightly.cli.embed_cli(self.cfg)
      self.assertGreater(
          len(
              os.getenv(
                  self.cfg["environment_variable_names"][
                      "lightly_last_embedding_path"
                  ]
              )
          ),
          0,
      )
  
file_path: lightly/tests/cli/test_cli_embed.py
imports: import os
  import re
  import sys
  import tempfile
  import torchvision
  from hydra.experimental import compose, initialize
  import lightly
  from tests.api_workflow.mocked_api_workflow_client import MockedApiWorkflowClient, MockedApiWorkflowSetup
label_desc: Use image node_id 4 for calling the TestCLIEmbed obj's underlying member method code with example usage: obj.test_embed() without return types