code: def test_owndata(self):
      assert 3 == self.flags["OWNDATA"]
  
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 4 for calling the TestFlags obj's underlying member method code with example usage: obj.test_owndata() without return types