code: def test_differences(self):
      self.assert_difference("0b101", "0b001", "0b100")
      self.assert_difference("0b0111", "0b1100", "0b0011")
      self.assert_difference("0b10111", "0b01100", "0b10011")
  
imports: import unittest
  from copy import deepcopy
  from random import randint, random, seed
  from lightly.api.bitmask import BitMask
label_desc: Use image node_id 11 for calling the TestBitMask obj's underlying member method code with example usage: obj.test_differences() without return types