code: def testStackKeysIncorrectDtypeFails(self):
      m = map_ops.empty_tensor_map()
      k = constant_op.constant("key_with_wrong_dtype")
      v = constant_op.constant(2.0)
      m = map_ops.tensor_map_insert(m, k, v)
      simple = "Key does not match requested dtype."
      with self.assertRaisesRegex(errors.InvalidArgumentError, simple):
          keys = map_ops.tensor_map_stack_keys(m, dtypes.float32)
          self.evaluate(keys)
  
imports: from absl.testing import parameterized
  from tensorflow.python.eager import backprop
  from tensorflow.python.framework import constant_op
  from tensorflow.python.framework import dtypes
  from tensorflow.python.framework import errors
  from tensorflow.python.framework import test_util
  from tensorflow.python.ops import array_ops
  from tensorflow.python.ops import cond
  from tensorflow.python.ops import map_ops
  from tensorflow.python.ops import sort_ops
  from tensorflow.python.platform import test
label_desc: Use image node_id 13 for calling the MapOpsTest obj's underlying member method code with example usage: obj.testStackKeysIncorrectDtypeFails() without return types