code: def setUp(self):
      super(CoordinateDescentTest, self).setUp()
      self._metadata = ml_metadata_db.MLMetaData(None, None, None)
  
file_path: model_search/model_search/search/coordinate_descent_test.py
imports: from absl import logging
  from absl.testing import parameterized
  import mock
  from model_search import hparam
  from model_search.metadata import ml_metadata_db
  from model_search.metadata import trial
  from model_search.proto import phoenix_spec_pb2
  from model_search.search import coordinate_descent
  from model_search.search import test_utils
  import numpy
  import tensorflow.compat.v2
label_desc: Use image node_id 1 for calling the CoordinateDescentTest obj's underlying member method code with example usage: obj.setUp() without return types