code: def test_output_size(self, output_sizes):
      mod = mlp.MLP(output_sizes)
      expected_output_size = output_sizes[-1] if output_sizes else None
      self.assertEqual(mod.output_size, expected_output_size)
  
imports: from absl.testing import absltest
  from absl.testing import parameterized
  from haiku._src import test_utils
  from haiku._src.nets import mlp
  import jax
  import jax.numpy
label_desc: Use image node_id 23 for calling the MLPTest obj's underlying member method code with example usage: obj.test_output_size(output_sizes) without return types