code: def setUpClass(cls):
      x = tf.placeholder(tf.float32, shape=[None, 30])
      net_in = tl.layers.InputLayer(x, name="input")
  
      net_d1 = tl.layers.DenseLayer(net_in, n_units=10, name="dense1")
      net_d2 = tl.layers.DenseLayer(net_in, n_units=10, name="dense2")
      net_d3 = tl.layers.DenseLayer(net_in, n_units=10, name="dense3")
  
      cls.net_stack = tl.layers.StackLayer(
          [net_d1, net_d2, net_d3], axis=1, name="stack"
      )
  
      cls.net_stack.print_layers()
      cls.net_stack.print_params(False)
  
      cls.net_unstack = tl.layers.UnStackLayer(
          cls.net_stack, axis=1, name="unstack"
      )
  
      cls.net_unstack.print_layers()
      cls.net_unstack.print_params(False)
  
file_path: TensorLayer/tests/pending/test_layers_stack.py
imports: import os
  import unittest
  import tensorflow
  import tensorlayer
  from tests.utils import CustomTestCase
label_desc: Use image node_id 1 for calling the Layer_Stack_Test obj's underlying member method code with example usage: obj.setUpClass(cls) without return types