code: def test_feature_metadata_with_dropped_features(self):
      feature_metadata = FeatureMetadata(dropped_features=["d1", "d2"])
      assert feature_metadata.identity_feature_name is None
      assert feature_metadata.datetime_features is None
      assert feature_metadata.time_series_id_features is None
      assert feature_metadata.categorical_features is None
      assert feature_metadata.dropped_features == ["d1", "d2"]
  
      feature_metadata_dict = feature_metadata.to_dict()
      expected_feature_metadata_dict = {
          "identity_feature_name": None,
          "datetime_features": None,
          "categorical_features": None,
          "dropped_features": ["d1", "d2"],
          "time_series_id_features": None,
      }
      assert feature_metadata_dict == expected_feature_metadata_dict
  
file_path: responsible-ai-toolbox/responsibleai/tests/test_feature_metadata.py
imports: import pytest
  from raiutils.exceptions import UserConfigValidationException
  from responsibleai.feature_metadata import FeatureMetadata
label_desc: Use image node_id 5 for calling the TestFeatureMetadata obj's underlying member method code with example usage: obj.test_feature_metadata_with_dropped_features() without return types