code: def test_concat_tuples_to_chainerx(self, backend_config):
      device = chainerx.get_device("native:0")
      arrays = self.get_tuple_arrays_to_concat(backend_config)
      self.check_concat_tuples(
          arrays, device, backend.ChainerxDevice(device)
      )
  
imports: import pickle
  import sys
  import unittest
  import numpy
  import pytest
  from chainer import backend
  from chainer.backends import cuda
  from chainer import dataset
  from chainer import testing
  from chainer.testing import attr
  import chainer.testing.backend
  import chainerx
label_desc: Use image node_id 11 for calling the ConverterTestBase obj's underlying member method code with example usage: obj.test_concat_tuples_to_chainerx(backend_config) without return types