code: def test_list_inputs(self):
      class ListLayer(layers.Layer):
          def call(self, inputs):
              assert isinstance(inputs, list)
              return inputs
  
      model = Sequential([ListLayer()])
      x = [np.random.random((3, 2)), np.random.random((3, 2))]
      y = model(x)
      self.assertEqual(type(y), list)
      model.summary()
  
imports: import numpy
  import pytest
  from keras import backend
  from keras import layers
  from keras import testing
  from keras.layers.core.input_layer import Input
  from keras.models.functional import Functional
  from keras.models.sequential import Sequential
label_desc: Use image node_id 5 for calling the SequentialTest obj's underlying member method code with example usage: obj.test_list_inputs() and returns: inputs