code: def test_read_stats_protos(self):
      store = tf_testdata_utils.get_tfx_pipeline_metadata_store(
          self.tmp_db_path
      )
      stats = store.get_artifacts_by_id(
          [tf_testdata_utils.TFX_0_21_STATS_ARTIFACT_ID]
      )
      self.assertLen(stats, 1)
      data_stats = tf_utils.read_stats_protos(stats[-1].uri)
      self.assertLen(data_stats, 2)
  
imports: import os
  import uuid
  import ml_metadata
  import tensorflow_model_analysis
  from absl.testing import absltest
  from ml_metadata.proto import metadata_store_pb2
  from model_card_toolkit.model_card import ModelCard, PerformanceMetric
  from model_card_toolkit.utils import tf_utils
  from model_card_toolkit.utils.testdata import tf_testdata_utils
label_desc: Use image node_id 15 for calling the TfUtilsTest obj's underlying member method code with example usage: obj.test_read_stats_protos() without return types