code: def test_concat_with_late_inputs(self):
      network = layers.join(
          layers.parallel(
              layers.Relu(),
              layers.Relu(),
          ),
          layers.Concatenate(),
      )
  
      self.assertShapesEqual(network.input_shape, [None, None])
      self.assertShapesEqual(network.output_shape, None)
  
      network = layers.Input((10, 10, 3)) >> network
  
      self.assertShapesEqual(network.input_shape, (None, 10, 10, 3))
      self.assertShapesEqual(network.output_shape, (None, 10, 10, 6))
  
file_path: neupy/tests/layers/test_merge.py
imports: import tensorflow
  import numpy
  from neupy import layers
  from neupy.utils import asfloat
  from neupy.exceptions import LayerConnectionError
  from base import BaseTestCase
label_desc: Use image node_id 5 for calling the ConcatenateTestCase obj's underlying member method code with example usage: obj.test_concat_with_late_inputs() without return types