code: def _verify_tf_cond_branch_vars(vars_, symbol_names, branch_name):
      """Verifies variables output by a conditional branch for consistency."""
      for name, var_ in zip(symbol_names, vars_):
          if isinstance(var_, variables.Undefined):
              raise ValueError(
                  "'{}' must also be initialized in the {} branch".format(
                      name, branch_name
                  )
              )
          if isinstance(var_, variables.UndefinedReturnValue):
              raise ValueError(
                  "the {} branch must also have a return statement.".format(
                      branch_name
                  )
              )
  
imports: import functools
  import sys
  import traceback
  import numpy
  from tensorflow.python.autograph.operators import py_builtins
  from tensorflow.python.autograph.operators import variables
  from tensorflow.python.autograph.utils import ag_logging
  from tensorflow.python.autograph.utils import misc
  from tensorflow.python.autograph.utils import tensors
  from tensorflow.python.autograph.utils import type_registry
  from tensorflow.python.framework import dtypes
  from tensorflow.python.framework import errors_impl
  from tensorflow.python.framework import func_graph
  from tensorflow.python.framework import ops
  from tensorflow.python.framework import tensor_conversion
  from tensorflow.python.framework import tensor_shape
  from tensorflow.python.framework import tensor_util
  from tensorflow.python.ops import array_ops
  from tensorflow.python.ops import cond
  from tensorflow.python.ops import control_flow_assert
  from tensorflow.python.ops import control_flow_util
  from tensorflow.python.ops import math_ops
  from tensorflow.python.ops import tensor_array_ops
  from tensorflow.python.ops import while_loop
  from tensorflow.python.types import distribute
  from tensorflow.python.util import nest
  from tensorflow.python.util import variable_utils
label_desc: Use image node_id 8 for calling a global function with example usage: _verify_tf_cond_branch_vars(vars_, symbol_names, branch_name) without return types