code: def test_visualize_embeddings_no_logdir(self):
      with self.assertRaisesRegex(
          ValueError, "Expected logdir to be a path, but got None"
      ):
          projector.visualize_embeddings(None, create_dummy_config())
  
file_path: tensorboard/tensorboard/plugins/projector/projector_api_test.py
imports: import os
  import tensorflow
  from google.protobuf import text_format
  from tensorboard.plugins import projector
  from tensorboard.util import test_util
label_desc: Use image node_id 3 for calling the ProjectorApiTest obj's underlying member method code with example usage: obj.test_visualize_embeddings_no_logdir() without return types