code: def setUp(self):
      self.flags = flags.Flags(1, 2, 3)
  
file_path: cupy/tests/cupy_tests/core_tests/test_flags.py
imports: import unittest
  from cupy._core import flags
  from cupy import testing
label_desc: Use image node_id 1 for calling the TestFlags obj's underlying member method code with example usage: obj.setUp() without return types