code: def test_call_forward(self):
      visitor = self.TestVisitor()
      children = [("name1", "thing1"), ("name2", "thing2")]
      public_api.PublicAPIVisitor(visitor)("test", "dummy", children)
      self.assertEqual(set(["test"]), visitor.symbols)
      self.assertEqual("dummy", visitor.last_parent)
      self.assertEqual(
          [("name1", "thing1"), ("name2", "thing2")],
          visitor.last_children,
      )
  
imports: from tensorflow.python.platform import googletest
  from tensorflow.tools.common import public_api
label_desc: Use image node_id 1 for calling the PublicApiTest obj's underlying member method code with example usage: obj.test_call_forward() without return types