code: def testOpAllowListNamespace(self):
      """Test that the building of the python wrapper worked."""
      op = test_namespace_ops.namespace_test_string_output
      self.assertIsNotNone(op)
  
imports: from tensorflow.python.framework import test_namespace_ops
  from tensorflow.python.platform import googletest
label_desc: Use image node_id 1 for calling the OpAllowlistNamespaceTest obj's underlying member method code with example usage: obj.testOpAllowListNamespace() without return types