code: def test_yolo3_models():
      ctx = mx.context.current_context()
      x = mx.random.uniform(
          shape=(1, 3, 320, 320), ctx=ctx
      )  # allow non-squre and larger inputs
      models = ["yolo3_darknet53_voc"]
      _test_model_list(models, ctx, x)
  
imports: from __future__ import print_function
  import warnings
  import logging
  import mxnet
  from mxnet.contrib.quantization import *
  from ..unittests.common import try_gpu, with_cpu
  import gluoncv
label_desc: Use image node_id 20 for calling a global function with example usage: test_yolo3_models() without return types