code: def test_src_not_exported(self):
      self.assertFalse(hasattr(snt, "src"))
  
imports: import importlib
  import sonnet
  from sonnet.src import test_utils
  import tensorflow
label_desc: Use image node_id 1 for calling the PublicSymbolsTest obj's underlying member method code with example usage: obj.test_src_not_exported() without return types