code: def test_output(self):
      name = self.ops
      if hasattr(self, "name"):
          name = self.name
      self.expect(
          self.model, self.x, name=name, expected_num_initializers=0
      )
  
imports: import chainer
  import chainer.functions
  from chainer import testing
  import numpy
  import onnx
  import pytest
  from onnx_chainer import export
  from onnx_chainer.testing import input_generator
  from onnx_chainer_tests.helper import ONNXModelChecker
  from onnx_chainer_tests.helper import ONNXModelTest
label_desc: Use image node_id 2 for calling the TestArrayOperators obj's underlying member method code with example usage: obj.test_output() without return types