code: def setUp(self):
      self._enabled = control_flow_v2_toggles.control_flow_v2_enabled()
      control_flow_v2_toggles.enable_control_flow_v2()
      super(WhileV2Test, self).setUp()
  
imports: from tensorflow.compiler.tf2xla.python import xla
  from tensorflow.python.compiler.xla import jit
  from tensorflow.python.compiler.xla import xla
  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 test_util
  from tensorflow.python.ops import array_ops
  from tensorflow.python.ops import control_flow_v2_toggles
  from tensorflow.python.ops import math_ops
  from tensorflow.python.ops import random_ops
  from tensorflow.python.ops import resource_variable_ops
  from tensorflow.python.ops import while_loop
  from tensorflow.python.ops.parallel_for import control_flow_ops
  from tensorflow.python.ops.parallel_for.test_util import PForTestCase
  from tensorflow.python.platform import test
label_desc: Use image node_id 1 for calling the WhileV2Test obj's underlying member method code with example usage: obj.setUp() without return types