code: def test_save_profile(self):
      logdir = self.get_temp_dir()
      profile_pb = trace_events_pb2.Trace()
      profile_result = profile_pb.SerializeToString()
      profiler.save(logdir, profile_result)
      file_list = gfile.ListDirectory(logdir)
      self.assertEqual(len(file_list), 2)
      for file_name in gfile.ListDirectory(logdir):
          if gfile.IsDirectory(os.path.join(logdir, file_name)):
              self.assertEqual(file_name, "plugins")
          else:
              self.assertTrue(file_name.endswith(".profile-empty"))
  
file_path: tensorflow-upstream/tensorflow/python/eager/profiler_test.py
imports: import os
  from tensorflow.python.eager import profiler
  from tensorflow.python.eager import test
  from tensorflow.python.framework import config
  from tensorflow.python.framework import constant_op
  from tensorflow.python.framework import test_util
  from tensorflow.python.platform import gfile
  from tensorflow.python.profiler import trace
  from tsl.profiler.protobuf import trace_events_pb2
label_desc: Use image node_id 2 for calling the ProfilerTest obj's underlying member method code with example usage: obj.test_save_profile() without return types