code: def test_equal_and_hash_function(self, optimizer):
      opt1 = optimizer(0.1)
      opt2 = optimizer(0.1)
      opt3 = optimizer(0.2)
      self.assertEqual(opt1, opt2)
      self.assertEqual(hash(opt1), hash(opt2))
      self.assertNotEqual(opt1, opt3)
      self.assertNotEqual(hash(opt1), hash(opt3))
  
imports: from absl.testing import parameterized
  from tensorflow.core.protobuf.tpu import tpu_embedding_configuration_pb2
  from tensorflow.python.compat import v2_compat
  from tensorflow.python.platform import test
  from tensorflow.python.tpu import tpu_embedding_v2_utils
label_desc: Use image node_id 5 for calling the TPUEmbeddingOptimizerTest obj's underlying member method code with example usage: obj.test_equal_and_hash_function(optimizer) without return types