code: def inputs(self):
      return [
          tf.TensorSpec(
              (None, self.shape, self.shape, 3), tf.float32, "input"
          )
      ]
  
imports: import argparse
  import glob
  import numpy
  import os
  import tensorflow
  from tensorpack import *
  from tensorpack.tfutils.scope_utils import auto_reuse_variable_scope
  from tensorpack.utils.viz import stack_patches
  from GAN import GANModelDesc, GANTrainer, RandomZData
label_desc: Use image node_id 2 for calling the Model obj's underlying member method code with example usage: obj.inputs() and returns: list