code: def test_symbol_basic():
      mlist = []
      mlist.append(models.mlp2())
      for m in mlist:
          m.list_arguments()
          m.list_outputs()
  
imports: import copy
  import sys
  import os
  import logging
  import re
  import json
  import mxnet
  import numpy
  from common import assertRaises, models, TemporaryDirectory
  from mxnet.base import NotImplementedForSymbol
  from mxnet.test_utils import discard_stderr, rand_shape_nd, use_np, environment
  from mxnet.util import np_shape
  import pickle
label_desc: Use image node_id 1 for calling a global function with example usage: test_symbol_basic() without return types