code: def test_even_n_fails(self, input_layer):
      from lasagne.layers.normalization import (
          LocalResponseNormalization2DLayer,
      )
  
      with pytest.raises(NotImplementedError):
          LocalResponseNormalization2DLayer(input_layer, n=4)
  
imports: from mock import Mock
  import numpy
  import pytest
  import theano
label_desc: Use image node_id 7 for calling the TestLocalResponseNormalization2DLayer obj's underlying member method code with example usage: obj.test_even_n_fails(input_layer) without return types