code: def test_model_summary_sequential(self):
      model = Sequential()
      model.add(
          LSTM(
              input_shape=(16, 32), output_dim=8, return_sequences=True
          )
      )
      model.add(Dropout(0.2))
      model.add(LSTM(32, return_sequences=True))
      model.add(Dropout(0.2))
      model.add(LSTM(15, return_sequences=False))
      model.add(Dropout(0.2))
      model.add(Dense(output_dim=1))
      model.summary()
  
imports: import pytest
  import shutil
  from zoo.feature.common import ChainedPreprocessing
  from zoo.feature.image import *
  from zoo.pipeline.api.keras.layers import *
  from zoo.pipeline.api.keras.models import *
  from test.zoo.pipeline.utils.test_utils import ZooTestCase
label_desc: Use image node_id 13 for calling the TestSimpleIntegration obj's underlying member method code with example usage: obj.test_model_summary_sequential() without return types