code: def test_get_latest_metrics_dict_empty():
      progress_tracker_metrics = OrderedDict(
          [
              (
                  "category_F18D1",
                  OrderedDict([("loss", []), ("accuracy", [])]),
              ),
              ("combined", {"loss": []}),
          ]
      )
  
      latest_metrics_dict = trainer_utils.get_latest_metrics_dict(
          progress_tracker_metrics
      )
  
      assert not latest_metrics_dict
  
file_path: ludwig/tests/ludwig/utils/test_trainer_utils.py
imports: from collections import OrderedDict
  from typing import Union
  import pytest
  from ludwig.constants import AUTO, BATCH_SIZE, COMBINED, LOSS
  from ludwig.features.category_feature import CategoryOutputFeature
  from ludwig.features.feature_utils import LudwigFeatureDict
  from ludwig.schema.features.category_feature import ECDCategoryOutputFeatureConfig
  from ludwig.schema.trainer import ECDTrainerConfig
  from ludwig.schema.utils import load_config_with_kwargs
  from ludwig.utils import trainer_utils
  from ludwig.utils.metric_utils import TrainerMetric
label_desc: Use image node_id 2 for calling a global function with example usage: test_get_latest_metrics_dict_empty() without return types