code: def testRecoverSession(self):
      # Create a checkpoint.
      checkpoint_dir = os.path.join(
          self.get_temp_dir(), "recover_session"
      )
      try:
          gfile.DeleteRecursively(checkpoint_dir)
      except errors.OpError:
          pass  # Ignore
      gfile.MakeDirs(checkpoint_dir)
  
      with ops.Graph().as_default():
          v = variable_v1.VariableV1(1, name="v")
          sm = session_manager.SessionManager(
              ready_op=variables.assert_variables_initialized()
          )
          saver = saver_lib.Saver({"v": v})
          sess, initialized = sm.recover_session(
              "", saver=saver, checkpoint_dir=checkpoint_dir
          )
          self.assertFalse(initialized)
          sess.run(v.initializer)
          self.assertEqual(1, sess.run(v))
          saver.save(
              sess,
              os.path.join(
                  checkpoint_dir, "recover_session_checkpoint"
              ),
          )
      # Create a new Graph and SessionManager and recover.
      with ops.Graph().as_default():
          v = variable_v1.VariableV1(2, name="v")
          with self.cached_session():
              self.assertEqual(
                  False, variable_v1.is_variable_initialized(v).eval()
              )
          sm2 = session_manager.SessionManager(
              ready_op=variables.assert_variables_initialized()
          )
          saver = saver_lib.Saver({"v": v})
          sess, initialized = sm2.recover_session(
              "", saver=saver, checkpoint_dir=checkpoint_dir
          )
          self.assertTrue(initialized)
          self.assertEqual(
              True,
              variable_v1.is_variable_initialized(
                  sess.graph.get_tensor_by_name("v:0")
              ).eval(session=sess),
          )
          self.assertEqual(1, sess.run(v))
  
imports: import os
  from tensorflow.python.checkpoint import checkpoint_management
  from tensorflow.python.client import session
  from tensorflow.python.framework import dtypes
  from tensorflow.python.framework import errors
  from tensorflow.python.framework import errors_impl
  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 resource_variables_toggle
  from tensorflow.python.ops import variable_v1
  from tensorflow.python.ops import variables
  from tensorflow.python.ops import while_loop
  from tensorflow.python.platform import gfile
  from tensorflow.python.platform import test
  from tensorflow.python.training import saver
  from tensorflow.python.training import server_lib
  from tensorflow.python.training import session_manager
label_desc: Use image node_id 6 for calling the ObsoleteSessionManagerTest obj's underlying member method code with example usage: obj.testRecoverSession() without return types