code: def test_pad_empty(self, xp, dtype):
      array = xp.arange(6, dtype=dtype).reshape([2, 3])
      pad_width = 2
      a = xp.pad(array, pad_width=pad_width, mode="empty")
      # omit uninitialized "empty" boundary from the comparison
      return a[pad_width:-pad_width, pad_width:-pad_width]
  
imports: import unittest
  import warnings
  import numpy
  import pytest
  import cupy
  from cupy import testing
label_desc: Use image node_id 1 for calling the TestPadEmpty obj's underlying member method code with example usage: obj.test_pad_empty(xp, dtype) and returns: a