code: def hybrid_forward(self, F, *x):
      children = x
      x = self.conv(F.concat(*x, dim=1))
      x = self.bn(x)
      if self.residual:
          x = x + children[0]
      x = self.relu(x)
  
      return x
  
imports: from __future__ import division
  import os
  import mxnet
  from mxnet.gluon.block import HybridBlock
  from mxnet.gluon import nn
  from mxnet.gluon.nn import BatchNorm
label_desc: Use image node_id 2 for calling the Root obj's underlying member method code with example usage: obj.hybrid_forward(F) and returns: x