code: def test_keep_graph_on_report_flag_true(self):
      self._check(True)
  
imports: import os
  import shutil
  import tempfile
  import unittest
  import numpy
  import chainer
  from chainer import configuration
  from chainer import links
  from chainer import testing
  from chainer import training
  from chainer.training.extensions import computational_graph
label_desc: Use image node_id 3 for calling the TestGraphBuilderKeepGraphOnReport obj's underlying member method code with example usage: obj.test_keep_graph_on_report_flag_true() without return types