code: def test_config(self):
      elu_layer = elu.ELU()
      self.run_class_serialization_test(elu_layer)
  
file_path: keras/keras/layers/activations/elu_test.py
imports: import numpy
  import pytest
  from keras import testing
  from keras.layers.activations import elu
label_desc: Use image node_id 1 for calling the ELUTest obj's underlying member method code with example usage: obj.test_config() without return types