code: def forward(self, x):
      if self.reverse:
          return self.bn(self.conv0(x)) + x
      else:
          return x + self.bn(self.conv0(x))
  
imports: import copy
  import mxnet
  import pytest
  from subgraph_common import check_fusion, check_neg_fusion, check_quantize
  from subgraph_common import CustomNormalInit, DATA_SHAPE, RELU6, TailNegBlock
  from subgraph_common import DATA_SHAPE, SG_PASS_NAME, QUANTIZE_SG_PASS_NAME
  from mxnet.contrib import quantization
  from mxnet.gluon import nn
  from mxnet.test_utils import assert_almost_equal, assert_almost_equal_with_err
label_desc: Use image node_id 2 for calling the ConvBNSum obj's underlying member method code with example usage: obj.forward(x) and returns: unknown, unknown