code: def crop_layer_1(self):
      from lasagne.layers.merge import ConcatLayer
  
      return ConcatLayer(
          [Mock(), Mock()], axis=1, cropping=["lower"] * 2
      )
  
imports: from mock import Mock
  import numpy
  import pytest
  import theano
label_desc: Use image node_id 3 for calling the TestConcatLayer obj's underlying member method code with example usage: obj.crop_layer_1() and returns: ConcatLayer