code: def check_keys_reuse(self, source, loads):
      rval = loads(source)
      (a, b), (c, d) = sorted(rval[0]), sorted(rval[1])
      self.assertIs(a, c)
      self.assertIs(b, d)
  
imports: import decimal
  from io import StringIO
  from collections import OrderedDict
  from test.test_json import PyTest, CTest
  from test import support
label_desc: Use image node_id 6 for calling the TestDecode obj's underlying member method code with example usage: obj.check_keys_reuse(source, loads) without return types