code: def test_empty(self):
      self.assertEmpty(get_summary(lambda: None))
  
imports: from collections.abc import Sequence
  import typing
  from absl.testing import absltest
  from absl.testing import parameterized
  from haiku._src import base
  from haiku._src import basic
  from haiku._src import module
  from haiku._src import summarise
  from haiku._src import test_utils
  from haiku._src import transform
  import jax
  import jax.numpy
label_desc: Use image node_id 1 for calling the SummariseTest obj's underlying member method code with example usage: obj.test_empty() without return types