code: def testWarmupFilePath(self):
      self.assertEqual(
          path_utils.warmup_file_path("/my-model"),
          "/my-model/assets.extra/tf_serving_warmup_requests",
      )
  
file_path: tfx/tfx/utils/path_utils_test.py
imports: import os
  from absl.testing import parameterized
  import tensorflow
  from tfx.types import standard_artifacts
  from tfx.utils import io_utils
  from tfx.utils import path_utils
  from tfx.utils import path_constants
  from ml_metadata.proto import metadata_store_pb2
label_desc: Use image node_id 5 for calling the PathUtilsTest obj's underlying member method code with example usage: obj.testWarmupFilePath() without return types