code: def testOpProperty_DefaultValue(self):
      result = Bar.create()
      self.assertEqual(result.bar, "bar")
  
imports: import copy
  from typing import Optional, Mapping, Set
  import tensorflow
  from tfx.dsl.input_resolution import resolver_op
  import tfx.types
  from tfx.types import standard_artifacts
label_desc: Use image node_id 14 for calling the ResolverOpTest obj's underlying member method code with example usage: obj.testOpProperty_DefaultValue() without return types