code: def train_one_batch(self, x, y):
      pass
  
file_path: singa/examples/onnx/superresolution.py
imports: import os
  import numpy
  from PIL import Image
  from resizeimage import resizeimage
  from singa import device
  from singa import tensor
  from singa import sonnx
  import onnx
  from utils import download_model, check_exist_or_download
  import logging
label_desc: Use image node_id 3 for calling the MyModel obj's underlying member method code with example usage: obj.train_one_batch(x, y) without return types