code: def tearDown(self):
      libxml2.cleanupParser()
      if libxml2.debugMemory(1) != 0:
          libxml2.dumpMemory()
          self.fail("Memory leak %d bytes" % (libxml2.debugMemory(1),))
      else:
          print("OK")
  
file_path: turicreate/deps/src/libxml2-2.9.1/python/tests/tstLastError.py
imports: import sys, unittest
  import libxml2
label_desc: Use image node_id 3 for calling the TestCase obj's underlying member method code with example usage: obj.tearDown() without return types