code: def generate_inputs(self):
      x_shape = self.x_shape
      dtype = self.dtype
  
      if self.test_name in ("test_backward", "test_double_backward"):
          x = numpy.arange(functools.reduce(mul, x_shape), dtype=dtype)
          x = x.reshape(x_shape)
          x = 2 * x / x.size - 1
      else:
          x = numpy.random.randn(*x_shape).astype(dtype, copy=False)
  
      return (x,)
  
imports: import functools
  from operator import mul
  import unittest
  import chainer
  import numpy
  import pytest
  import chainerx
  from chainerx_tests import op_utils
label_desc: Use image node_id 2 for calling the TestMaxPool obj's underlying member method code with example usage: obj.generate_inputs() and returns: x