code: def test_param_consistence(self):
      model = ModelHelper(name="test_mode")
      cnv = brew.conv(model, "data", "cnv", 32, 32, 4)
      step_model = ModelHelper(name="step_model", param_model=model)
      a = brew.fc(step_model, cnv, "a", 100, 200)
      brew.fc(model, a, "b", 200, 5)
      # test the _parameters_info is shared between model and step_model
      self.assertEqual(
          model._parameters_info, step_model._parameters_info
      )
  
imports: from caffe2.python import brew, core, scope, workspace
  from caffe2.python.modeling.parameter_info import ParameterTags
  from caffe2.python.model_helper import ModelHelper
  from caffe2.python.cnn import CNNModelHelper
  import unittest
  import numpy
label_desc: Use image node_id 15 for calling the BrewTest obj's underlying member method code with example usage: obj.test_param_consistence() without return types