code: def testCallingEnableTracingTwiceWithTheSameDumpRootIsIdempotent(
      self,
  ):
      x = constant_op.constant([10.0, 12.0, 10.0])
      dumping_callback.enable_dump_debug_info(self.dump_root)
      writer = dumping_callback.enable_dump_debug_info(self.dump_root)
  
      for _ in range(2):
          array_ops.unique(x)
  
      writer.FlushNonExecutionFiles()
      writer.FlushExecutionFiles()
  
      with debug_events_reader.DebugDataReader(
          self.dump_root
      ) as reader:
          reader.update()
          executions = reader.executions()
          self.assertLen(executions, 2)
          for execution in executions:
              self.assertGreater(execution.wall_time, 0)
              self.assertEqual(execution.op_type, "Unique")
              self.assertEqual(execution.num_outputs, 2)
              _, stack_frames = reader.read_execution_stack_trace(
                  execution
              )
              self._verifyStackFrames(stack_frames)
  
imports: import collections
  import os
  import shutil
  import socket
  import tempfile
  import threading
  from absl.testing import parameterized
  import numpy
  from tensorflow.core.protobuf import debug_event_pb2
  from tensorflow.python.debug.lib import debug_events_reader
  from tensorflow.python.debug.lib import dumping_callback
  from tensorflow.python.debug.lib import dumping_callback_test_lib
  from tensorflow.python.eager import context
  from tensorflow.python.eager import def_function
  from tensorflow.python.framework import constant_op
  from tensorflow.python.framework import dtypes
  from tensorflow.python.framework import ops
  from tensorflow.python.framework import test_util
  from tensorflow.python.ops import array_ops
  from tensorflow.python.ops import math_ops
  from tensorflow.python.ops import variables
  from tensorflow.python.platform import googletest
  from tensorflow.python.platform import test
  from tensorflow.python.platform import tf_logging
label_desc: Use image node_id 22 for calling the DumpingCallbackTest obj's underlying member method code with example usage: obj.testCallingEnableTracingTwiceWithTheSameDumpRootIsIdempotent() without return types