code: def test_mxnet():
      for testcase in [mxnet_flatten, mxnet_slice, mxnet_cast]:
          for device in ["cpu", "gpu"]:
              yield mxnet_case, testcase, device
  
imports: import numpy
  import nvidia.dali.ops
  import nvidia.dali.types
  import os
  import random
  from functools import partial
  from nvidia.dali.pipeline import Pipeline
  from nvidia.dali import fn, pipeline_def
  from nvidia.dali.python_function_plugin import current_dali_stream
label_desc: Use image node_id 20 for calling a global function with example usage: test_mxnet() without return types