code: def test_dict_output(self):
      sequential = nn.Sequential(
          [
              AttentionDict(),
              AttentionDict(),
          ]
      )
  
      key1, key2 = random.split(random.key(0), 2)
      query = random.uniform(key1, (3, 5))
      key_value = random.uniform(key1, (9, 5))
      params_1 = sequential.init(key2, query, key_value)
      outputs = sequential.apply(params_1, query, key_value)
      np.testing.assert_equal(len(outputs), 2)
      out_query, out_key_value = outputs["query"], outputs["key_value"]
      np.testing.assert_equal(out_query.shape, (3, 5))
      np.testing.assert_equal(out_key_value.shape, (9, 5))
  
imports: from typing import Any, Optional, Sequence
  import jax
  import numpy
  from absl.testing import absltest
  from jax import numpy
  from jax import random
  from flax import linen
label_desc: Use image node_id 6 for calling the SequentialTest obj's underlying member method code with example usage: obj.test_dict_output() without return types