code: def setup(self, psuccess=1.0):
      pass
  
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 1 for calling the TestBitMask obj's underlying member method code with example usage: obj.setup(psuccess) without return types