code: def on_execution(self, execution_index, execution):
      if execution_index in self.executions:
          raise ValueError(
              "Duplicate execution index: %d" % execution_index
          )
      self.executions[execution_index] = execution
  
imports: from absl.testing import parameterized
  import numpy
  from tensorflow.core.protobuf import debug_event_pb2
  from tensorflow.python.debug.lib import debug_events_monitors
  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 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.platform import googletest
  from tensorflow.python.platform import test
label_desc: Use image node_id 2 for calling the TestMonitor obj's underlying member method code with example usage: obj.on_execution(execution_index, execution) without return types