code: def testError(self, rt_inputs, axis, error, message):
      self.assertRaisesRegex(
          error, message, ragged_concat_ops.stack, rt_inputs, axis
      )
  
file_path: tensorflow/tensorflow/python/ops/ragged/ragged_stack_op_test.py
imports: from absl.testing import parameterized
  from tensorflow.python.framework import constant_op
  from tensorflow.python.framework import test_util
  from tensorflow.python.ops.ragged import ragged_concat_ops
  from tensorflow.python.ops.ragged import ragged_factory_ops
  from tensorflow.python.platform import googletest
label_desc: Use image node_id 2 for calling the RaggedStackOpTest obj's underlying member method code with example usage: obj.testError(rt_inputs, axis, error, message) without return types