code: def inputs(self):
      return [
          tf.TensorSpec((None, 30, 30, 3), tf.float32, "input"),
          tf.TensorSpec((None,), tf.int32, "label"),
      ]
  
file_path: tensorpack/examples/basics/cifar-convnet.py
imports: import argparse
  import os
  from tensorpack import tfv1
  from tensorpack import *
  from tensorpack.dataflow import dataset
  from tensorpack.tfutils.summary import *
  from tensorpack.utils.gpu import get_num_gpu
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