code: def test_mask_rcnn_models():
      ctx = mx.context.current_context()
      x = mx.random.uniform(shape=(1, 3, 300, 400), ctx=ctx)
      models = [
          "mask_rcnn_resnet50_v1b_coco",
          "mask_rcnn_fpn_resnet50_v1b_coco",
          "mask_rcnn_resnet18_v1b_coco",
          "mask_rcnn_fpn_resnet18_v1b_coco",
      ]
      _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 18 for calling a global function with example usage: test_mask_rcnn_models() without return types