code: def check_unpackbits(self, data, xp, bitorder="big"):
      a = xp.array(data, dtype=xp.uint8)
      return xp.unpackbits(a, bitorder=bitorder)
  
file_path: cupy/tests/cupy_tests/binary_tests/test_packing.py
imports: import numpy
  import unittest
  import pytest
  import cupy
  from cupy import testing
label_desc: Use image node_id 2 for calling the TestPacking obj's underlying member method code with example usage: obj.check_unpackbits(data, xp, bitorder) and returns: xp