code: def test_deprecation(self):
      warnings.warn("dw", DeprecationWarning)
      warnings.warn("dw", DeprecationWarning)
      warnings.warn("dw", DeprecationWarning)
  
file_path: cpython/Lib/test/test_unittest/_test_warnings.py
imports: import sys
  import unittest
  import warnings
label_desc: Use image node_id 2 for calling the TestWarnings obj's underlying member method code with example usage: obj.test_deprecation() without return types